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| Brand | Zeblaze |
| Model | Btalk 4 Pro |
| Product Type | Bluetooth Calling Smartwatch |
| Available Colors | Black, Silver |
| Companion App | Zeblaze Connect |
| Watch Faces | 160+ customizable watch faces |
| Body Material | Plastic |
| Dimensions | 45.2 × 46.6 × 10.3 mm (without sensor base) |
| Thickness with Sensor | 11.5 mm |
| Weight | 21.5 g (without strap) |
| Water Resistance | IP68 (not intended for swimming or diving) |
| Display Type | AMOLED Touchscreen |
| Display Size | 1.43-inch circular display |
| Resolution | 466 × 466 pixels |
| Pixel Density | 391 PPI |
| Peak Brightness | Up to 1,000 nits (claimed) |
| Screen Protection | 2.5D tempered glass with anti-fingerprint coating |
| Always-On Display | Yes |
| Biometric Sensor | OHR fusion biometric sensor |
| Heart Rate Monitoring | 24/7 heart-rate monitoring |
| Blood Oxygen Monitoring | SpO2 monitoring |
| Sleep Tracking | Yes |
| Activity Tracking | Steps, calories, distance and pace |
| Motion Sensors | 3-axis accelerometer and 3-axis gyroscope |
| Bluetooth | Bluetooth Low Energy (BLE) 5.3 |
| Bluetooth Calling | Yes, through a paired smartphone |
| Speaker | Built-in speaker |
| Microphone | Built-in microphone |
| Voice Assistant | Supported |
| Notifications | Call, message and supported app notifications |
| Music Control | Yes |
| Camera Control | Yes, through a paired smartphone |
| Battery Capacity | 260 mAh |
| Battery Type | Lithium-polymer |
| Charging Method | Magnetic charging cable |
| Charging Time | Approximately 1.5 hours |
| Battery Life | Up to 7 days (manufacturer-advertised) |
| Strap Material | Antibacterial liquid silicone |
| Strap Width | 22 mm |
| Strap Attachment | Quick-release |
| Wrist Circumference | 120–235 mm |
| Android Compatibility | Android 6.0 and above |
| iOS Compatibility | iOS 13.0 and above |
| Smartwatch | Zeblaze Btalk 4 Pro |
| Standard Strap | Silicone strap |
| Additional Strap | Nylon strap |
| Charging Cable | Magnetic charging cable |
| User Manual | Included |
Get specific details about this product from customers who own it.
