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Device Specs: Referred (not editable) comparison sheet [8]

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Apple Watch 42mm A1554 (Apple Watch 1,2)
Apple Watch 38mm A1553 (Apple Watch 1,1)
Apple Watch Edition 42mm A1554 (Apple Watch 1,2)
Apple Watch Edition 38mm A1553 (Apple Watch 1,1)
Apple Watch Sport 42mm A1554 (Apple Watch 1,2)
Apple Watch Sport 38mm A1553 (Apple Watch 1,1)
Apple Watch 42mm Hermes A1554 (Apple Watch 1,2)
Apple Watch 38mm Hermes A1553 (Apple Watch 1,1)
Use the following link to refer to this comparison
Apple Watch 42mm A1554  (Apple Watch 1,2)
Apple Watch 38mm A1553  (Apple Watch 1,1)
Apple Watch Edition 42mm A1554  (Apple Watch 1,2)
Apple Watch Edition 38mm A1553  (Apple Watch 1,1)
Apple Watch Sport 42mm A1554  (Apple Watch 1,2)
Apple Watch Sport 38mm A1553  (Apple Watch 1,1)
Apple Watch 42mm Hermes A1554  (Apple Watch 1,2)
Apple Watch 38mm Hermes A1553  (Apple Watch 1,1)
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IntroductionIntroduction
BriefBrief Introduction: One or two sentences which enumerates some important attributes of the specifc device variant described by this datasheet Space black stainless steel, or stainless steel 42 mm case, Sapphire crystal, Retina display, and ceramic back Space black stainless steel, or stainless steel 38 mm case, Sapphire crystal, Retina display, and ceramic back Sapphire crystal, Retina display, ceramic back, 18-Karat yellow gold or 18-Karat rose gold 42 mm case
Sapphire crystal, Retina display, ceramic back, 18-Karat yellow gold or 18-Karat rose gold 38 mm case Space gray, gold, rose gold, or silver aluminum 42 mm case, Ion-X glass, Retina display, and composite back Space gray, gold, rose gold, or silver aluminum 38 mm case, Ion-X glass, Retina display, and composite back Stainless steel 42 mm case with Hermés watch face and engraving on the back, Sapphire crystal, Retina display, and ceramic back Stainless steel case with Hermés watch face and engraving, Sapphire crystal, Retina display, and ceramic back
ReleasedFirst official market release date in (year, month) 2015 Apr 24 2015 Apr 24 2015 Apr 24 2015 Apr 24 2015 Apr 24 2015 Apr 24 2015 Apr 24 2015 Apr 24
Hardware DesignerThe company which designed this device Apple Apple Apple Apple Apple Apple Apple Apple
ManufacturerThe company which produces this device Quanta Computer Quanta Computer Quanta Computer Quanta Computer Quanta Computer Quanta Computer Quanta Computer Quanta Computer
OEM IDThe OEM ID is internal code and refers to a specific variant of the model series n28aap n27aap n28aap n27aap n28aap n27aap n28aap n27aap
General ExtrasHardware extras like stylus, kickstand, rotatatble screen, rotatable keyboard, haptic feedback, etc. Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback Haptic touch feedback, Tactile touch feedback
Device CategorySmartphone, tablet, smart watch, PDA, palmtop, etc. Smartwatch Smartwatch Smartwatch Smartwatch Smartwatch Smartwatch Smartwatch Smartwatch

Physical AttributesPhysical Attributes
WidthWidth is horizontally measured between the left and right edges of device according to the default display orientation 42 mm 33.3 mm 42 mm 33.3 mm 42 mm 33.3 mm 42 mm 33.3 mm
HeightHeight is vertically measured between the bottom and top edges of device according to the default display orientation 35.9 mm 38.6 mm 35.9 mm 38.6 mm 35.9 mm 38.6 mm 35.9 mm 38.6 mm
DepthDepth refers to the thickness of the device. Depth is usually the smallest dimension of the device 10.5 mm 10.5 mm 10.5 mm 10.5 mm 10.5 mm 10.5 mm 10.5 mm 10.5 mm
Dimensions 1.65x1.41x0.41 inches 1.31x1.52x0.41 inches 1.65x1.41x0.41 inches 1.31x1.52x0.41 inches 1.65x1.41x0.41 inches 1.31x1.52x0.41 inches 1.65x1.41x0.41 inches 1.31x1.52x0.41 inches
MassThe mass of the device including standard battery and stylus (if any and it can be inserted into the device) measured in grams 50 g 40 g 67 g 54 g 30 g 25 g 50 g 40 g
1.76 ounces 1.41 ounces 2.36 ounces 1.9 ounces 1.06 ounces 0.88 ounces 1.76 ounces 1.41 ounces

Software EnvironmentSoftware Environment
PlatformThe family of the operating system like Android, iOS, Windows Phone/Mobile, Palm OS, etc. iOS / iPadOS iOS / iPadOS iOS / iPadOS iOS / iPadOS iOS / iPadOS iOS / iPadOS iOS / iPadOS iOS / iPadOS
Operating SystemPre-installed (usually embedded) operating system which the device was released with. Apple Watch OS 1.0 Apple Watch OS 1.0 Apple Watch OS 1.0 Apple Watch OS 1.0 Apple Watch OS 1.0 Apple Watch OS 1.0 Apple Watch OS 1.0 Apple Watch OS 1.0

Application processor, ChipsetApplication processor, Chipset
CPU ClockFrequency of the square signal which schedules the internal operation of microprocessor (synchronous sequential logic). The current consumed by the processor is approximately proportional to clock rate. 520 MHz 520 MHz 520 MHz 520 MHz 520 MHz 520 MHz
CPUManufacturer part number and most important characteristics of the IC which includes the main application processor or processors Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU

Operative MemoryOperative Memory
RAM TypeType of volatile memory IC which specifies RAM architecture, timing characteristics, refresh mode, voltage levels and physical design of the IC. Two major types of random-access memory is static RAM (SRAM) periodically refreshed dynamic RAM (DRAM). Yes Yes Yes Yes Yes Yes Yes Yes
RAM Capacity (converted)RAM capacity in binary bytes (KiB: 1024 bytes, MiB: 1024 KiB, GiB: 1024 MiB) 512 MiB RAM 512 MiB RAM 512 MiB RAM 512 MiB RAM 512 MiB RAM 512 MiB RAM 512 MiB RAM 512 MiB RAM



Non-volatile MemoryNon-volatile Memory
Non-volatile Memory InterfaceInterface (e.g. UFS 2.0, eMMC 5.1, moviNAND) which determines physical layer (width, clock rate, lanes, protocol) of data transfer between the application processor and the NV memory Yes Yes Yes Yes Yes Yes Yes Yes
Non-volatile Memory Capacity (converted)The value of ROM capacity converted to the most appropriate units (KiB: 1024 bytes, KB: 1000 bytes, MiB: 1024 KiB, MB: 1000 KB, GiB: 1024 MiB, GB: 1000 MB) 8 GB ROM 8 GB ROM 8 GB ROM 8 GB ROM 8 GB ROM 8 GB ROM 8 GB ROM 8 GB ROM

DisplayDisplayAll parameters that related to display
Display DiagonalThe distance measured between the furthest corners of the display. In case of display with rounded edges this refers to the diagonal of the smallest bounding rectangle. 39.78 mm 33.96 mm 39.78 mm 33.96 mm 39.78 mm 33.96 mm 39.78 mm 33.96 mm
1.6 inch 1.3 inch 1.6 inch 1.3 inch 1.6 inch 1.3 inch 1.6 inch 1.3 inch
ResolutionHorizontal and vertical resolution of the primary display. In case of display with rounded edges this refers to the smallest bounding rectangle. 312x390 272x340 312x390 272x340 312x390 272x340 312x390 272x340
Horizontal Full Bezel WidthDefined as the sum of width of left and right vertical display bezels. If the display panel is located in the middle width of left and right bezels are the same and their width is the half of the full bezel width. 17.15 mm 12.09 mm 17.15 mm 12.09 mm 17.15 mm 12.09 mm 17.15 mm 12.09 mm
Display Area UtilizationRegular display area per regular front panel area ratio. This approximated indicator does not count with possible rounded corners (neither on front panel nor on display) or display notches, holes. 51.2% 43.8% 51.2% 43.8% 51.2% 43.8% 51.2% 43.8%
Pixel DensityIndicates the number of pixels per inch 319 PPI 326 PPI 319 PPI 326 PPI 319 PPI 326 PPI 319 PPI 326 PPI
Display TypeDisplay technology, e.g. Color/ monochrome e-ink, STN, PM-OLED, AM-OLED, TN-TFT, IPS TFT, ASV TFT, MVA TFT, PVA TFT, PLS TFT AM-OLED display AM-OLED display AM-OLED display AM-OLED display AM-OLED display AM-OLED display AM-OLED display AM-OLED display
Display Subtype Retina Display No No No No No Retina Display No
Number of Display ScalesMaximal number of displayable colors or scales 16.8M 16.8M 16.8M 16.8M 16.8M 16.8M 16.8M 16.8M
Scratch Resistant ScreenUsual types: Gorilla Glass generations, DragonTrail/X, Sapphire Glass Sapphire Glass Sapphire Glass Sapphire Glass Sapphire Glass Yes Yes Sapphire Glass Sapphire Glass

Graphical SubsystemGraphical Subsystem
Graphical ControllerManufacturer and part number of the graphics controller IC or commercial name of the intellectual property (IP) if the graphics controller is the part of a chipset PowerVR SGX543 PowerVR SGX543 PowerVR SGX543 PowerVR SGX543 PowerVR SGX543 PowerVR SGX543 PowerVR SGX543 PowerVR SGX543

Audio/Video InterfacesAudio/Video Interfaces

Audio SubsystemAudio Subsystem
Microphone(s)Analog or digital sound receiver. Main applications: voice calls, active noise cancellation, voice command, voice/video recording, voice identification mono mono mono mono mono mono mono mono
Loudspeaker(s) mono mono mono mono mono mono mono mono

Cellular PhoneCellular Phone
Complementary Phone ServicesPossible extras: voice transmission, voice speaker, vibration, speakerphone, active noise cancellation, PTT, HD Voice, VoLTE, etc. Vibrate Vibrate Vibrate Vibrate Vibrate Vibrate Vibrate Vibrate

Secondary Cellular PhoneSecondary Cellular Phone

Control PeripheralsControl Peripherals
Touchscreen TypeDetermines how the touchscreen module senses the touch of the screen Capacitive multi-touch screen Capacitive multi-touch screen Capacitive multi-touch screen Capacitive multi-touch screen Capacitive multi-touch screen Capacitive multi-touch screen Capacitive multi-touch screen Capacitive multi-touch screen
Scroll WheelScroll Wheel, jog and rotary machanisms to help user with scrolling on the screen 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel

Communication InterfacesCommunication Interfaces
BluetoothIEEE 802.15 is a short-range radio technology standard that allows transfer of data, and the use of accessories such as wireless audio devices and printers. This field specifies the supported BT version. Bluetooth 4.0 Bluetooth 4.0 Bluetooth 4.0 Bluetooth 4.0 Bluetooth 4.0 Bluetooth 4.0 Bluetooth 4.0 Bluetooth 4.0
Wireless LANWireless LAN / WLAN / Wi-Fi: 802.11 defines a medium-range wireless data link that allows for internet access and data transfer. This field enumerates the supported protocols (e.g. 802.11a/b/g/n). 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n 802.11b, 802.11g, 802.11n
NFCNear Field Communication is short-range wireless radio data exchange technology based on radio-frequency identification (RFID). This field enumerates the supported NFC technologies. Yes Yes Yes Yes Yes Yes Yes Yes

Multimedia BroadcastMultimedia Broadcast

Satellite NavigationSatellite Navigation

Primary Camera SystemPrimary Camera SystemPrimary camera usually has better imaging capabilities than secondary camera if any

Secondary Camera SystemSecondary Camera SystemWidely used for video telephony or taking selfies

Built-in SensorsBuilt-in Sensors
Built-in accelerometerAn internal component that senses acceleration components of the device.  Used for automatic screen rotation and for games and applications that rely on acceleration measurement  on X, Y, and Z axis. Possible types: 1D, 2D, 3D Yes Yes Yes Yes Yes Yes Yes Yes
Built-in gyroscopeAn internal component that senses the orientation of the device.  Used for automatic screen rotation and for games and applications that rely on the devices position in the X, Y, and Z axis. Possible types: 1D, 2D, 3D Yes Yes Yes Yes Yes Yes Yes Yes
Additional sensorsBuilt-in ambient (barometer, temperature, altimeter, light, etc.), biometric (fingerprint, HR, step, etc.) and comfort (hall sensor, gesture sensor, proximity, etc.) sensors Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor Barometer, HR sensor, L sensor

Ingress ProtectionIngress Protection
Protection from solid materialsIngress Protection Standards. IP First digit: Protection from solid objects or materials Yes Yes Yes Yes Yes Yes Yes Yes
Protection from liquidsIngress Protection Standards. IP Second digit: Protection from liquids 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth 7 Protected against immersion up to 1m of depth
Immersion into liquids (depth limit)Device is protected against immersion into this depth of liquid (usually water) at most. (IP rating) 100 cm 100 cm 100 cm

Power SupplyPower Supply
BatteryBattery technology Li-ion polymer (LiPo) Li-ion polymer (LiPo) Li-ion polymer (LiPo) Li-ion polymer (LiPo) Li-ion polymer (LiPo) Li-ion polymer (LiPo) Li-ion polymer (LiPo) Li-ion polymer (LiPo)
built-in built-in built-in built-in built-in built-in built-in built-in
1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell
Nominal Battery VoltageIf there are more than 1 cells in the battery in series connection the nominal resulting battery voltage is the sum of voltage of cells 3.78 Volts 3.80 Volts 3.78 Volts 3.80 Volts 3.78 Volts 3.80 Volts 3.78 Volts 3.80 Volts
Nominal Battery CapacityIf there are more than 1 cells in the battery in parellel connection the nominal resulting battery capacity is the sum of capacity of cells 250 mAh battery 205 mAh battery 250 mAh battery 205 mAh battery 250 mAh battery 205 mAh battery 250 mAh battery 205 mAh battery
Nominal Battery EnergyThe product of battery capacity and nominal voltage determines the maximal nominal stored energy in the battery 0.95 Wh 0.78 Wh 0.95 Wh 0.78 Wh 0.95 Wh 0.78 Wh 0.95 Wh 0.78 Wh
Estimated Battery LifeEstimated always-on battery life of the device in case of common usage conditions 18.0 hours 18.0 hours 18.0 hours 18.0 hours
Wireless ChargingWireless charging (like Qi, PMA) is a kind of near-field electromagnatic power transmission methods. Inductive coupling is created between a mobile device (secondary coil) and a special charger (primary coil), usually docking station or charging pad. Yes Yes Yes Yes Yes Yes Yes Yes

Geographical AttributesGeographical Attributes
Market CountriesCountries where the device was officially sold. Overlap is possible. No Algeria, Argentina, Australia, Austria, Belarus, Belgium, Bolivia, Brazil, Bulgaria, Cambodia, Canada, Chile, China, Colombia, Costa Rica, Cyprus, Croatia, Czech, Denmark, Ecuador, Estonia, Egypt, Finland, France, Greece, Germany, Guatemala, HK, Hungary, India, Indonesia, Ireland, Israel, Italy, Japan, Jordan, Kenya, Kuwait, Latvia, Lebanon, Lithuania, Malaysia, Mexico, Morocco, Netherlands, Norway, NZ, Panama, Pakistan, Paraguay, Peru, Philippines, Poland, Portugal, Puerto Rico, Russia, Romania, Saudi Arabia, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Switzerland, Sri Lanka, Sweden, Taiwan, Thailand, Tunisie, Turkey, UAE, UK, Ukraine, USA, Vietnam No No No Algeria, Argentina, Australia, Austria, Belarus, Belgium, Brazil, Bulgaria, Canada, Chile, China, Costa Rica, Cyprus, Croatia, Czech, Denmark, Ecuador, Egypt, Estonia, Finland, France, Germany, Greece, Guatemala, HK, Honduras, Hungary, India, Indonesia, Ireland, Israel, Italy, Japan, Jordan, Kenya, Kuwait, Latvia, Lithuania, Lebanon, Malaysia, Mexico, Morocco, Nepal, Netherlands, Norway, NZ, Panama, Pakistan, Paraguay, Peru, Philippines, Poland, Portugal, Puerto Rico, Russia, Romania, Saudi Arabia, Serbia, Slovakia, Singapore, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Taiwan, Thailand, Tunisie, Turkey, UAE, UK, Ukraine, USA, Vietnam No No
Market RegionsRegions where the device was officially sold.  Overlap is possible. No Africa, Asia, Australia, Central America, Eastern Europe, Europe, Middle East , North America, Oceania, South America, Southeast Asia, Western Europe, Worldwide No No No Africa, Asia, Australia, Central America, Eastern Europe, Europe, Middle East , North America, Oceania, South America, Southeast Asia, Western Europe, Worldwide No No
Mobile OperatorList of mobile operators (carriers) or distributors which sold the device in their own network

Datasheet AttributesDatasheet Attributes
Data IntegrityData integrity level determines the integrity of the published information. Final datasheets are not intended to be modified in the future, preliminary ones can be based on unofficial information or speculations, incomplete ones are also preliminary b Final Final Final Final Final Final Final Final
AddedThe exact time of the datasheet addition 2015-03-10 22:54 2015-04-26 12:00 2015-04-27 13:55 2015-04-28 00:25 2015-04-28 23:40 2015-04-27 14:07 2020-01-14 20:09 2020-01-14 20:11

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