Apple Watch Series 7 (41mm) vs Apple Watch SE 3 (40mm) 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 7 (41mm) Apple Watch SE 3 (40mm)
Released · Oct 15, 2021
Released · Sep 19, 2025
448x368px
1.6-inch · 394x324px
1GB · 32GB
1GB · 64GB
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Availability

Officially announced
Sep 14, 2021 Sep 09, 2025
Prices (MSRP)
$249

Design

Dimensions
1.57 x 1.34 x 0.42 inches
40 x 34 x 10.7 mm
Weight
1.13 oz / 32.0 g
With Titanium case - 37 g
With Stainless Steel case - 42.3 g
0.93 oz / 26.4 g
Materials
Back: Aluminum
Resistance
Water, Dust; IP6X Water (up to 50 meters)
Colors
Midnight, Starlight, Green, Blue, Red Starlight, Midnight

Display

Size
1.6-inch, 57.48% screen-to-body
Type
OLED OLED, 1000 nits
Resolution
448x368px 394x324px, 325 PPI
Features
Pressure-sensitive, Scratch-resistant glass, Ambient light sensor

Hardware

System chip
Apple S7 Apple S10
Processor
Dual-core Dual-core
GPU
PowerVR PowerVR
Memory
1GB/32GB 1GB/64GB
Storage expansion
not expandable not expandable
OS
watchOS (9.x, 8.x) watchOS (9.x, 8.x, 7.x)

Battery

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

Connectivity & Features

Bluetooth
5.0 5.3
WLAN
Yes
802.11 b, g, n
Yes
802.11 b, g, n
Sensors
Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, Blood Oxygen Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, Ambient light sensor
Location
A-GPS, Glonass, Galileo, BeiDou, QZSS GPS, Glonass
Other
NFC

Multimedia

Speakers
Loudspeaker Loudspeaker
Additional microphone(s)
Yes

Cellular

5G Bands
5G Ready
LTE Bands
1, 2, 3, 4, 5, 7, 12, 13, 17, 18, 19, 25, 26, 66
TDD Bands
39, 40, 41
3G Bands
1, 2, 4, 5 1, 2, 4, 5
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
eSIM eSIM

Alternative variants

With Stainless Steel case
Weight 1.49 oz / 42.3 g
Materials Back: Stainless steel
Colors Graphite, Silver, Gold
With Titanium case
Weight 1.31 oz / 37.0 g
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