| Brand Name | ESTG |
| Category | Smart Watches |
| System | iOS |
| Function | Passometer |
| Battery Life | 2 |
| Type | On Wrist |
| Voice assistant built-in | no |
| Language | English |
| High-concerned chemical | None |
| Display Size | 1.43inch |
| Network Mode | None |
| Metrics measured | Heart Rate Monitor |
| RAM | <128MB |
| Screen Shape | SQUARE |
| Battery Capacity(mAh) | 220-300mah |
| Resolution | 360*360 |
| Bluetooth-compatible Version | 5.0 |
| GPS | No |
| Screen Material | TFT |
| Application Age Group | Adult |
| Origin | Mainland China |
| Compatibility | All Compatible |
| ROM | <128MB |
| Activity Tracked | Steps Tracker |
| Waterproof Grade | Life Waterproof |
| Band Material | Silica Gel |
| Touch Screen | Yes |
| Battery Detachable | No |
| SIM Card Available | No |
| Band Detachable | Yes |
| CPU Manufacturer | MediaTek |
| Multiple Dials | Yes |
| Certification | CE |
| Style | SPORT |
| Mechanism | Yes |
| Movement Type | Electronic |
| Model | f57 |
| APP Download Available | Yes |
| Case Material | Alloy |
| Rear Camera | None |
| WIFI | no |
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