Apple Watch Series 7 (45mm) 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.

9.0
Apple Watch Series 7 (45mm)
Apple Watch Series 7 (45mm) Apple Watch Series 2 (42mm)
Released · Oct 15, 2021
Released · September 2016
448x368px
1.6-inch · 390x312px
1GB · 32GB
0.5GB · 8GB
334 mAh

Availability

Officially announced
Sep 14, 2021

Design

Dimensions
1.67 x 1.31 x 0.45 inches
42.5 x 33.3 x 11.4 mm
Weight
1.34 oz / 38.0 g 1.85 oz / 52.4 g
Materials
Back: Aluminum Frame: Stainless steel
Resistance
Water, Dust; IP6X Water
Colors
Midnight, Starlight, Green, Blue, Red Silver, Black

Display

Size
1.6-inch, 60.71% screen-to-body
Type
OLED OLED, 1000 nits
Resolution
448x368px 390x312px, 303 PPI
Features
Pressure-sensitive, Ambient light sensor

Hardware

System chip
Apple S7 Apple S2 (16 nm)
Processor
Dual-core Dual-core
780 MHz
Cortex-A7
GPU
PowerVR PowerVR G6200
Memory
1GB/32GB 0.5GB/8GB
Storage expansion
not expandable not expandable
OS
watchOS (9.x, 8.x) watchOS (6.x, 5.1, 5, 4.x, 3.x)

Battery

Type
Li - Ion 334 mAh
Charging
Qi wireless charging Magnetic charging

Connectivity & Features

Bluetooth
5.0 4.0
WLAN
b,g,n
802.11 b, g, n
b,g,n
802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, Blood Oxygen Accelerometer, Gyroscope, Heart rate, Ambient light sensor
Location
A-GPS, Glonass, Galileo, BeiDou, QZSS Glonass, Galileo
Other
NFC

Multimedia

Speakers
Loudspeaker Loudspeaker
Additional microphone(s)
Yes

Cellular

3G Bands
1, 2, 4, 5
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
eSIM

Alternative variants

With Stainless Steel case
Weight 1.82 oz / 51.5 g
Materials Back: Stainless steel
With aluminum frame
Weight 1.21 oz / 34.2 g
Materials Frame: Aluminum
With titanium case
Weight 1.59 oz / 45.1 g
Materials Back: Titanium
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