Apple Watch (1st generation) | Specification

Apple Watch (1st generation) introduced in 2015, and marked Apple's entrance into the smartwatch market, revolutionizing wearable technology. The watch is available in two sizes: 38mm (model A1553) and 42mm (model A1554), catering to different wrist sizes and preferences.

Featuring a stunning Retina OLED display with 450 nits peak brightness, the Apple Watch 1st generation delivers vibrant colors and sharp visuals, making it easy to read notifications and interact with apps.

 

Running on watchOS 1.0, the watch can be upgraded to version 4.3.2, offering users access to a wide range of apps and features. Powered by the Apple S1 chipset, which uses a 28nm process, the watch runs smoothly with its 520 MHz Cortex-A7 CPU and PowerVR SGX543 GPU.

With 8GB of internal memory and 512MB of RAM, the watch provides ample space for storing apps, music, and fitness data. It also supports various health and fitness tracking features, making it an ideal companion for active individuals.

Specification of 42mm A1554 Models:

Network	Technology	No cellular connectivity
	Launch	Announced	2014, September. Released 2015, April
		Status	Discontinued
	Body	Dimensions	42 x 35.9 x 10.5 mm (1.65 x 1.41 x 0.41 in)
		Weight	50 g body (2.82 oz)
		Build	Glass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frame
		SIM	No
			IPX7 water resistant up to 1 meter and 30 minutes
		Display	Type	Retina OLED, 450 nits (peak)
	Size		1.65 inches
	Resolution		390 x 312 pixels (~303 ppi density)
	Protection		Sapphire crystal glass
			3D Touch display
	Platform	OS	watchOS 1.0, upgradable to 4.3.2
		Chipset	Apple S1 (28 nm)
CPU		520 MHz Cortex-A7
GPU		PowerVR SGX543
Memory	Card slot	No
	Internal	8GB 512MB RAM
	Camera		No
		Sound	Loudspeaker	Yes
			3.5mm jack	No
Comms			WLAN	Wi-Fi 802.11 b/g/n
	Bluetooth	4.0, LE
	Positioning	No
	NFC	Yes
	Radio	No
	USB	No
	Features	Sensors	Accelerometer, gyro, heart rate
			Natural language commands and dictation
		Battery	Type	Li-Ion 250 mAh (0.94 Wh), non-removable
Charging			Wireless
Misc			Colors	Stainless Steel/Red, White, Brown/Black/Blue/Marine Blue Buckle, Blue/Stone/White/Storm Gray Leather Loop, Silver/Space Black Milanese Loop, Link Bracelet, Space Black Stainless Steel/Black, Black Link Bracelet, Pearl Woven Nylon