| Brand | Apple |
| Model | Watch SE 3 |
| Device Type | Smartwatch |
| Release Date | 19 September 2025 |
| Status | Available |
| Operating System | iOS |
| OS Version | watchOS 26 |
| Chipset | Apple S10 |
| CPU | Dual-core |
| CPU Cores | 2 Cores |
| Architecture | 64 bit |
| GPU | PowerVR |
| Display Type | Retina LTPO OLED |
| Screen Size | 1.78 inches |
| Resolution | 448x368 px |
| Pixel Density | 326 ppi |
| Screen Protection | Ion-X strengthened glass (2025 gen) |
| Touch Screen | Capacitive Touchscreen |
| Brightness | 1000 nits |
| Height | 44 mm |
| Width | 38 mm |
| Thickness | 10.7 mm |
| Weight | 26.4 grams |
| Build | Glass front, plastic/sapphire crystal back, aluminum frame |
| Colors | Midnight, Starlight |
| Waterproof | Water Resistance: Up to 50m |
| Ruggedness | Dust proof |
| Yes | |
| Text Message | Yes |
| Incoming Call | Yes |
| Alarm | Yes |
| Calendar Reminder | Yes |
| Timer | Yes |
| Weather | Yes |
| Battery type | Li-Ion (Lithium Ion) |
| Wireless Charging | Wireless, 80% in 45 min |
| Placement | Non-removable |
| Internal Storage | 64 GB |
| Network | 2G, 3G, 4G, 5G |
| SIM Slot | Single SIM, GSM |
| SIM Size | SIM1: eSIM |
| VoLTE | Yes |
| Speed | HSPA, LTE, 5G |
| WLAN | Wi-Fi 802.11 b/g/n |
| Bluetooth | v5.3 |
| GPS | Yes with A-GPS, Glonass |
| NFC | Yes |
| Loudspeaker | Yes |
| Made By | US |
| Features | Accelerometer, gyro, heart rate (2nd gen), barometer, always-on altimeter, compass, temperature (body), Media playback |
