Apple Watch Series 1 (38mm) vs Apple Watch Series 2 (42mm) Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.


Apple Watch Series 1 (38mm)	Apple Watch Series 2 (42mm)
Released · April 2015	Released · September 2016
1.5-inch · 340x272px	1.6-inch · 390x312px
0.5GB · 8GB	0.5GB · 8GB
205 mAh	334 mAh

Design

Dimensions
1.52 x 1.31 x 0.41 inches 38.6 x 33.3 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
1.5-inch, 55.12% screen-to-body	1.6-inch, 60.71% screen-to-body
Type
OLED, 450 nits	OLED, 1000 nits
Resolution
340x272px, 290 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
205 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

Discover more

Full Specs
Apple Watch Series 1 (38mm) Specs

Full Specs
Apple Watch Series 2 (42mm) Specs

Multimedia

Speakers
Loudspeaker	Loudspeaker

Alternative variants

With aluminum frame


Weight	1.21 oz / 34.2 g
Materials	Frame: Aluminum