Same watch. The extra is for its own mobile connection. Who really needs it?
Short answer
SE 3 40 mm GPS + Cellular - eSIM, LTE and 5G RedCap: calls and messages without an iPhone nearby. SE 3 40 mm GPS - the same, but only works with your phone or over Wi-Fi, and much cheaper.
Key differences
| Spec | Apple Watch SE 3 40mm GPS | Apple Watch SE 3 40mm GPS + Cellular |
|---|---|---|
| Display | OLED, 324×394 | OLED, 324×394 |
| Chip | Apple S10 | Apple S10 |
| Memory | 64 GB | 64 GB |
| Battery life | up to 18 h | up to 18 h |
| Connectivity | Bluetooth, Wi-Fi | 5G RedCap, LTE, eSIM |
| Navigation | GPS, GLONASS, Galileo, QZSS, BeiDou (L1) | GPS, GLONASS, Galileo, QZSS, BeiDou (L1) |
| NFC | yes | yes |
| Sensors | heart rate, barometer, compass, gyroscope, temperature | heart rate, barometer, compass, gyroscope, temperature |
| Protection | 50 m | 50 m |
| OS | watchOS 26 | watchOS 26 |
| Compatibility | iPhone 11 / iPhone SE 2 / iOS 26 | iPhone 11 / iPhone SE 2 / iOS 26 |
| Dimensions, weight | 40×34×10.7 mm, 26.3 g | 40×34×10.7 mm, 26.4 g |
| Price | current prices | current prices |
Specs come from the device pages on Smartphone.ua.
What's the same
Apple S10, 64 GB, 324×394 display, up to 18 h, GPS, NFC, 50 m, 40×34×10.7 mm.
Connectivity
Cellular has eSIM: you can run without a phone and stay reachable. Your carrier must support eSIM for watches.
Who it's for
If your iPhone is always in your pocket, GPS is enough. Cellular suits runners, swimmers, kids and older relatives who need to stay in touch.
Verdict: who should buy which
- Connected without a phone - SE 3 40 mm GPS + Cellular.
- Phone always nearby - SE 3 40 mm GPS.
FAQ
Does Cellular affect battery life?
Apple quotes up to 18 h for both, but active LTE drains it faster.
How heavy are they?
26.3 and 26.4 g.
Which is cheaper?
The GPS version.