Apple Watch Series 1 (42mm) vs Apple Watch Series 2 (42mm) Specs Comparison

Design

Dimensions
1.67 x 1.43 x 0.41 inches 42.5 x 36.4 x 10.5 mm	1.67 x 1.31 x 0.45 inches 42.5 x 33.3 x 11.4 mm
Weight
0.88 oz / 25.0 g	1.85 oz / 52.4 g
Materials
Back: Plastic Frame: Aluminum	Frame: Stainless steel
Resistance
Yes; IPX7	Water
Colors
Silver, Gold, Rose Gold, Gray	Silver, Black

Display

Size
1.6-inch, 55.61% screen-to-body	1.6-inch, 60.71% screen-to-body
Type
OLED, 450 nits	OLED, 1000 nits
Resolution
390x312px, 303 PPI	390x312px, 303 PPI
Features
Pressure-sensitive, Ambient light sensor	Pressure-sensitive, Ambient light sensor

Hardware

System chip
Apple S1P (28 nm)	Apple S2 (16 nm)
Processor
Dual-core 520 MHz Cortex-A7	Dual-core 780 MHz Cortex-A7
GPU
PowerVR G6200	PowerVR G6200
Memory
0.5GB/8GB	0.5GB/8GB
Storage expansion
not expandable	not expandable
OS
watchOS (6.x, 5.1, 5, 4.x, 3.x)	watchOS (6.x, 5.1, 5, 4.x, 3.x)

Battery

Type
250 mAh	334 mAh
Charging
Magnetic charging	Magnetic charging

Connectivity & Features

Bluetooth
4.0	4.0
WLAN
b,g,n 802.11 b, g, n	b,g,n 802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Heart rate, Ambient light sensor	Accelerometer, Gyroscope, Heart rate, Ambient light sensor
Location
	Glonass, Galileo
Other
NFC	NFC

Multimedia

Speakers
Loudspeaker	Loudspeaker

Alternative variants

With aluminum frame

Weight	1.21 oz / 34.2 g
Materials	Frame: Aluminum

Discover more

Full Specs Apple Watch Series 1 (42mm) Specs

Full Specs Apple Watch Series 2 (42mm) Specs