Introduction:
Brand	Apple
Model	Watch 38mm A1553
Brief Space black stainless steel, or stainless steel 38 mm case, Sapphire crystal, Retina display, and ceramic back
Released	2015 Apr 24
Hardware Designer	Apple
Manufacturer	Quanta Computer
Codename	Apple Watch 1,1
OEM ID	n27aap
General Extras	Haptic touch feedback , Tactile touch feedback
Device Category	Smartwatch
List of Additional Features changeable straps, iOS 8.2 support
Collapse datasheet \| Add to compare Physical Attributes:
Width	33.3 mm
	1.31 inch
Height	38.6 mm
	1.52 inch
Depth	10.5 mm
	0.41 inches
Bounding Volume	13.5 ccm
Mass	40 g
	1.41 ounces
Software Environment:
Platform	Apple iOS / iPadOS
Operating System	Apple Watch OS 1.0
Application processor, Chipset:
CPU Clock	520 MHz
CPU	Apple S1 APL0778 (S7002), 2015, 32 bit, single-core, 32 Kbyte D-Cache, 256 Kbyte L2, 28 nm, IMG PowerVR SGX543 GPU
Operative Memory:
RAM Type	Yes
RAM Capacity	512 MiB RAM
Non-volatile Memory:
Non-volatile Memory Type	Flash EEPROM
Non-volatile Memory Interface	Yes
Non-volatile Memory Capacity	7629 MiB non-volatile
Display
Display Diagonal	33.96 mm
	1.3 inch
Resolution	272x340
	92480 pixels
Display Width	21.21 mm
	0.84 inch
Display Height	26.52 mm
	1.04 inch
Horizontal Full Bezel Width	12.09 mm
Display Area	562.6 square millimeter
Display Area Utilization	43.8%
Pixel Size	0.078 mm/pixel
Pixel Density	326 PPI
Display Type	Color AM-OLED display
Display Color Depth	24 bit/pixel
Number of Display Scales	16.8M
Display Dynamic Range Depth	8 bit/pixel
Display Illumination	Self-illuminating
Display Light Reflection Mode	Yes
Display Subpixel Scheme	Yes
Scratch Resistant Screen	Sapphire Glass
Collapse datasheet Graphical Subsystem:
Graphical Controller	PowerVR SGX543
Audio/Video Interfaces:
A/V Out	No
Audio Subsystem:
Audio Channel(s)	stereo
Sound Recording:
Microphone(s)	mono
Sound Playing:
Loudspeaker(s):	mono
Audio Output:	No
Cellular Phone:
Supported Cellular Bands	No
Complementary Phone Services	Vibrating Alert
Secondary Cellular Phone:
Sec. Supported Cellular Networks:	No
Control Peripherals:
Touchscreen Type	Capacitive multi-touch sensing screen
Touchscreen Simultaneous Touch Points	Yes
Scroll Wheel	Pressable rotary scroll wheel
Communication Interfaces:
Expansion Interfaces	No
USB	No
	No
USB Connector	No
Bluetooth	Bluetooth 4.0
	Internal antenna
Wireless LAN	IEEE 802.11b , IEEE 802.11g , IEEE 802.11n
	Internal antenna
NFC	Yes
Multimedia Broadcast:
FM Radio Receiver	No
Satellite Navigation:
Supported GPS protocol(s)	No
Primary Camera System
Camera Image Sensor	No
Focus	No
Flash	No
Collapse datasheet Auxiliary Camera:
Aux. Camera Image Sensor	No
Auxiliary Camera No. 2:
Aux. 2 Camera Image Sensor	No
Auxiliary Camera No. 3:
Aux. 3 Camera Image Sensor	No
Auxiliary Camera No. 4:
Aux. 4 Camera Image Sensor	No
Aux. 4 Camera Focus	No
Secondary Camera System
Secondary Camera Sensor	No
Secondary Auxiliary Camera:
Sec. Aux. Cam. Image Sensor	No
Secondary Auxiliary Camera No. 2:
Sec. Aux. 2 Cam. Image Sensor	No
Built-in Sensors:
Built-in accelerometer	Yes
Built-in gyroscope	Yes
Additional sensors	Barometer , Heart rate sensor , Light intensity sensor
Ingress Protection:
Protection from solid materials	Yes
Protection from liquids	7 Protected against the effect of immersion up to 1m of depth
Power Supply:
Battery	Lithium-ion polymer (LiPo)
	built-in
	1-cell
Nominal Cell Voltage (1st cell)	3.80 Volts
Nominal Cell Capacity (1st cell)	205 mAh cell
Nominal Battery Voltage	3.80 Volts
Nominal Battery Capacity	205 mAh battery
Nominal Battery Energy	0.78 Wh
Estimated Battery Life	18.0 hours
Estimated Average Current	11 mA
Wireless Charging	Yes
Geographical Attributes:
Market Countries	Algeria , Argentina , Australia , Austria , Belarus , Belgium , Bolivia , Brazil , Bulgaria , Cambodia , Canada , Chile , China , Colombia , Costa Rica , Cyprus , Croatia , Czech Republic , 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 , Emirates (UAE) , UK , Ukraine , USA , Vietnam
Market Regions	Africa , Asia , Australia , Central America , Eastern Europe , Europe , Middle East , North America (NA) , Oceania , South America (SA) , Southeast Asia , Western Europe , Worldwide
Datasheet Attributes:
Data Integrity	Final
Added	2015-04-26 12:00