DailyTechPricesDevice Comparison
| Watch Ultra 4 | T-Rex Dual Solar | |
|---|---|---|
| LAUNCH DATE | ||
| Announced | 9 September 2026 | 2026, September 22 |
| Released | 18 September 2026 | 2026, September 22 |
| Status | Available | Available |
| NETWORK | ||
| Technology | 5G RedCap / LTE | No cellular connectivity |
| BODY | ||
| Build | Grade 5 titanium | Sapphire glass front, Grade 5 titanium bezel and buttons, fiber-reinforced polymer frame, Grade 5 titanium and glass-ceramic back shell |
| Colors | Natural, Black | Basalt Black |
| Dimensions | 49 x 44 x 12 mm (1.93 x 1.73 x 0.47 in) | 51.4 mm case diameter; 16.9 mm thick with heart-rate sensor (14.5 mm without) |
| IP Rating | IP6X; 100m water resistance; recreational diving to 40m | 10 ATM water resistance |
| Strap | — | Silicone |
| Weight | 63.0 g natural; 63.1 g black | 69 g (without strap) |
| DISPLAY | ||
| Always-on display | Yes | — |
| Brightness | 3000 nits peak; 1 nit minimum | Up to 3,000 nits (peak) |
| Protection | Sapphire crystal | Sapphire crystal |
| Resolution | 422 × 514 pixels; 326 ppi | 466 x 466 pixels |
| Size | 1.98 inches (1245 mm2 display area) | 1.32 inches |
| Type | LTPO3 OLED, always-on Retina | AMOLED |
| PLATFORM | ||
| CPU | 64-bit dual-core | — |
| Chipset | Apple S11 | — |
| GPU | Integrated Apple graphics | — |
| Neural engine | 4 cores | — |
| OS | watchOS | Zepp OS |
| MEMORY | ||
| Internal | 64GB | — |
| SOUND | ||
| Loudspeaker | Dual speakers; siren | Yes |
| Microphones | — | Yes |
| COMMUNICATION | ||
| Bluetooth | 5.3 | 5.2, BLE (Bluetooth calls) |
| NFC | — | Yes, Zepp Pay contactless payments (European version, supported countries/regions) |
| Positioning | Dual-frequency GPS, Galileo, QZSS, BeiDou | Dual-band GNSS, six satellite systems |
| WLAN | Wi-Fi 4, 2.4/5GHz | Wi-Fi 2.4GHz |
| FEATURES | ||
| Health Features: | — | Blood-oxygen monitoring, Training Load, Training Effect, VO2 Max, recovery time, 180+ workout modes, automatic dive detection |
| Sensors | Electrical and optical heart sensors, blood oxygen, temperature, compass, altimeter, accelerometer, gyroscope, ambient light, depth, water temperature | BioTracker 6.0 PPG heart-rate sensor, barometric altimeter, compass, temperature sensor, gyroscope, accelerometer |
| BATTERY | ||
| Battery Life | — | Up to 25 days typical use; up to 41 hours in Accuracy GPS Mode; up to 34 days with front solar and up to 51 days with rear solar (3 hours a day at 50,000 lux); up to 180 days in Outdoor Extreme Mode with rear solar |
| Capacity | — | 660 mAh |
| Charging Type | Wireless (magnetic fast charging), 0-80% in about 45 min; 15 min charge for up to 18 hours | Dual-sided solar charging (display and glass-ceramic back plate); USB Type-C-compatible charging base |
| Type | Rechargeable lithium-ion | — |
| ADDITIONAL INFORMATION | ||
| Compatibility | iPhone 11 or newer, or iPhone SE (2nd generation or newer), with iOS 27 or newer | Zepp App; Android 7.0 or later, iOS 15.0 or later. NFC contactless payments (Zepp Pay) only on the European version, in supported countries (31 European countries incl. UK, Germany, France) |
| Environmental | — | Packaging sleeve made from 100% recyclable materials; mineral-free inks; no extra cable in the box, to cut unneeded materials (Amazfit) |
| Launch Price (USD) | — | $649.99 (US launch) |
| Models | — | A2570 |
| Models and regions | — | A2570 (one model for all markets; certified by the US FCC, Malaysia SIRIM, South Korea RRA, Indonesia SDPPI and the Eurasian Economic Union) |
| Price in Nigeria | ₦1,119,000 | ₦910,000 (estimate, converted from US launch price) |
| TESTS | ||
| Battery Endurance | — | Typical use: up to 25 days; heavy use: up to 13 days; Accuracy GPS mode: up to 41 h; trail running: up to 48 h (normal) / 33 h (heavy); Outdoor Extreme Mode: up to 40 days; low-temperature mode: 31 h sports / 26 days standby (Amazfit manufacturer figures, without solar) |