Apple Watch Series 7 (45mm) vs Apple Watch Series 1 (38mm) 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 1 (38mm)
Released · Oct 15, 2021
Released · April 2015
448 x 368 px
1.5-inch · 340 x 272 px
1GB · 32GB
0.5GB · 8GB
205 mAh

Display

Size
1.5-inch
Resolution
448 x 368 px 340 x 272 px, 290 PPI
Technology
OLED OLED
Screen-to-body
55.12 %
Peak brightness
450 cd/m2 (nit)
Features
Pressure-sensitive, Ambient light sensor

Hardware

System chip
Apple S7 Apple S1P (28 nm)
Processor
Dual-core Dual-core, 520 MHz, Cortex-A7
GPU
PowerVR PowerVR G6200
RAM
1GB 0.5GB
Internal storage
32GB, not expandable 8GB, not expandable
OS
watchOS (9.x, 8.x) watchOS (6.x, 5.1, 5, 4.x, 3.x)
Device type
Smartwatch Smartwatch

Battery

Capacity
205 mAh
Type
Li - Ion, Not user replaceable Not user replaceable
Charging
Qi wireless charging Magnetic charging

Camera

Design

Dimensions
1.52 x 1.31 x 0.41 inches
(38.6 x 33.3 x 10.5 mm)
Weight
1.34 oz(38.0 g) 0.88 oz(25.0 g)
Materials
Back: Aluminum Back: Plastic
Frame: Aluminum
Resistance
Water, Dust; IP6X Yes; IPX7
Colors
Midnight, Starlight, Green, Blue, Red Silver, Gold, Rose Gold, Gray

Cellular

3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
eSIM

Multimedia

Speakers
Loudspeaker Loudspeaker
Additional microphone(s)
Yes

Connectivity & Features

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

Availability

Officially announced
Sep 14, 2021

Alternative variants

With Stainless Steel case
Weight 1.82 oz(51.5 g)
Materials Back: Stainless steel
With titanium case
Weight 1.59 oz(45.1 g)
Materials Back: Titanium
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