Apple Watch SE 3
- Screen 1.73 or 1.57 inch retina display
- Battery life 18 hours
- Water resistance 5 ATM (50 metres)
- Sensors Accelerometer, gyro, heart rate (2nd gen), barometer, always-on altimeter, skin temperature, compass, GPS (GLONASS, Galileo, and QZSS), ambient light sensor, LTE (optional)
- Date September 2025
Specs
General
| Physical size | 44 x 38 x 10.7 mm, 40 x 38 x 10.7mm |
| Material | Glass front, plastic/sapphire crystal back, aluminum frame, 4x more crack-resistant Ion-X glass than previous generation |
| Charging | ast-charge capable (0–80% in about 45 minutes; 15 minutes for up to 8 hours) |
| Battery | 40mm (245mAh), 44mm (296mAh) - Lithium-polymer |
| Battery life | 18 hours, Up to 32 hours in Low Power Mode |
| Water resistance | 50 meters |
| Weight | 26-33 grams depending on model |
| Display type | Always-On Retina display with Force Touch, LTPO OLED display (1000 nits). |
| Display size | 44mm: 1.73 inches, 40mm: 1.57 inches |
| Display resolution | 44mm (368 x 448 pixels), 40mm (324 x 395 pixels) |
| Color options | Midnight, Starlight |
Sensors
| Accelerometer | Yes |
| Barometric altimeter | Yes |
| Compass | Yes |
| Galvanic skin response | No |
| Geomagnetic | No |
| Gyroscope | Yes |
| Optical heart rate | Yes |
| Electrical heart rate | Yes |
| SpO2 | Yes |
| Temperature | Yes |
| GPS | Yes |
| GALILEO | Yes |
| GLONASS | Yes |
| QZSS | Yes |
| Beidou | Yes |
| Ambient light sensor | Yes |
| Vibration motor | Yes |
| Microphone | Yes, with dual speakers (86-decibel) |
| Speakers | Yes |
Health & activity tracking
| Steps | Yes |
| Distance | Yes |
| Calories burned | Yes |
| Sports tracking | Yes |
| Floors | Yes |
| Sleep | Yes |
| Heart rate | Yes |
| Stress | No |
| Blood oxygen | Yes |
| Respiration rate | Yes |
| UV exposure | No |
| Skin temperature | Yes |
| Hydration level | No |
| HRV | No |
| ECG | Yes |
| Calorie intake | No |
| Blood pressure | No |
| Glucose | No |
| Other | Sleep apnea notifications, Wrist flick gesture, Double tap gesture |
Daily smart features
| Smartphone notifications | Yes |
| Smartphone music control | Yes |
| On-board music storage | Yes |
| Connected pay | Yes |
| Cellular | Optional (5G capable) |
| Connectivity | Bluetooth 5.3, Wi-Fi (802.11 b/g/n 2.4GHz & 5GHz), UMTS cellular radio, LTE cellular data (optional) |
| Operating system | WatchOS |
| Memory | 1GB RAM, 64GB storage |
| Processor | S10 chip, 4-core Neural Engine |
Disclaimer Note
These technical specs are correct to the best of our knowledge at the time of publishing.
