- idk.dev
- Smartwatches
- Apple
- Watch SE 3
AppleSmartwatch
Apple Watch SE 3
Apple Watch SE 3 is a smartwatch released in September 2025. Key specs: case size 44 mm, screen size 1.78″, AMOLED / OLED display, battery life (smartwatch mode) 0.8 days.
5.9Score
Display6.6
Battery life2.4
Health tracking9.5
Sports & outdoor8.0
Smart features7.6
Build & durability9.0
price range$215–265Reference price converted from EUR
- Released
- September 2025
- Type
- Smartwatch
- Brand
Apple- Popularity
- #189 of 796
- Model numbers
- A3325A3324A3328A3326A3327A3329
44 mmCase size
1.78″Screen size
YesAMOLED / OLED display
0.8 daysBattery life (smartwatch mode)
5 ATMWater resistance
26.4 gWeight
YesNFC payments
Spec guide
How it ranks among smartwatches of 2025
Screen size · 1.78″Top 22%Battery life (smartwatch mode) · 0.8 daysBottom 1%Water resistance · 5 ATMBottom 38%Weight · 26.4 gTop 13%
Compared with smartwatches released in 2025. Bars show the share of models it beats.
compared with other smartwatches
Why is Watch SE 3 a good choice?
Weight: 26.4 gbetter than 94% of smartwatches
Storage: 64 GBbetter than 91% of smartwatches
Screen size: 1.78″better than 73% of smartwatches
Thickness: 10.7 mmbetter than 75% of smartwatches
Weak points
Water resistance: 5 ATMworse than 90% of smartwatches
Battery life (smartwatch mode): 0.8 daysworse than 100% of smartwatches
Specifications
Full specifications
Design & durability
- Case size
- 44 mm
- Weight
- 26.4 g
- Thickness
- 10.7 mm
- Height
- 44 mm
- Width
- 38 mm
- Sapphire crystal
- Yes
- Lens / cover glass
- Ion-X strengthened glass (2025 gen)
- Strap material
- Fluorelastomer
- Water resistance
- 5 ATM
- Colours
- Midnight, Starlight
Display
- Screen size
- 1.78″
- Panel
- Retina LTPO OLED
- AMOLED / OLED display
- Yes
- Resolution (width)
- 368 px
- Resolution (height)
- 448 px
- Pixel density
- 326 ppi
- Peak brightness
- 1,000 nits
- LTPO display
- Yes
- Refresh rate
- 60 Hz
Battery
- Battery life (smartwatch mode)
- 0.8 days
- Battery life (hours)
- 18 h
- Battery type
- Li-Ion
- Wireless charging
- Yes
- Charged in 30 min
- 53%
Health sensors
- Optical heart rate
- Yes
- ECG
- Yes
- Skin temperature
- Yes
- Temperature sensor
- Yes
- Sleep tracking
- Yes
- Sensors
- Accelerometer, gyro, heart rate (2nd gen), barometer, always-on altimeter, compass, temperature (body)
Sports & navigation
- Built-in GPS
- Yes
- Satellite systems
- GLONASS, GALILEO, QZSS
- Barometric altimeter
- Yes
- Compass
- Yes
Connectivity
- NFC payments
- Yes
- LTE (cellular)
- Yes
- eSIM
- Yes
- Wi-Fi
- Wi-Fi 4
- Bluetooth
- 5.3
Smart features
- Calls from the wrist
- Yes
- Speaker
- Yes
- Microphone
- Yes
- Voice assistant
- Yes
- Music on the watch
- Yes
- Storage
- 64 GB
Specs are collected from manufacturers and open databases and normalised to one format; check details with the seller before you buy.
