Apple Watch SE 3 (40mm)

Full Specifications
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The Apple Watch SE 3 (40mm) is most commonly compared with these phones:

Availability

Officially announced 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 0.93 oz / 26.4 g
Resistance Water (up to 50 meters)
Colors Starlight, Midnight

Display

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

Hardware

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

Battery

Type Li - Ion
Charging Magnetic charging

Connectivity & Features

Bluetooth 5.3
WLAN a,b,g,n,ac
802.11 b, g, n
Sensors Accelerometer, Gyroscope, Altimeter, Compass, Heart rate, Barometer, Ambient light sensor
Location GPS, Glonass
Other NFC

Multimedia

Speakers Loudspeaker

Cellular

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