Why is E1 PRO better than Ares 3?
- Battery life (smartwatch mode)5 days vs 3 days+67%
Why is Ares 3 better than E1 PRO?
- AMOLED / OLED displayNo · E1 PRO: Yes
- Battery capacity180 mAh vs 380 mAh2.1×
Specifications
Side by side
| Design & durability | ||
| Weight | 45 g | — |
| Thickness | — | 12.7 mm |
| Lens / cover glass | 2.5D-Glas | — |
| Strap material | — | Silikon |
| Water resistance | 3 ATM | 3 ATM |
| Water rating (maker) | 3 ATM | 30 m / 3 bar / 3 ATM |
| Display | ||
| Screen size | — | 1.75″ |
| Display technology | — | AMOLED |
| Panel | — | AMOLED |
| AMOLED / OLED display | No | Yes |
| Resolution (width) | — | 240 px |
| Resolution (height) | — | 296 px |
| Battery | ||
| Battery life (smartwatch mode) | 5 days | 3 days |
| Battery life (hours) | 120 h | — |
| Battery capacity | 180 mAh | 380 mAh |
| Health sensors | ||
| Optical heart rate | Yes | Yes |
| Blood oxygen (SpO2) | Yes | Yes |
| Sleep tracking | Yes | — |
| Sensors | heart rate, SpO2 | heart rate, SpO2, accelerometer |
| Sports & navigation | ||
| Built-in GPS | Yes | — |
| Satellite systems | GPS | — |
| Connectivity | ||
| Bluetooth | — | 5.3 |
| Platform | ||
| Works with | iOS, Android | iOS, Android |









