| Model NO. | TK31 |
| Material | Silicone |
| Feature | Bluetooth, Water Resistant |
| ECG+PPG | Yes, Support |
| Waterproof | IP68 |
| Blood Glucose | Yes, Support |
| Battery Capacity | 130mAh |
| Bluetooth | Bluetooth LE 5.0 |
| CPU | REALTEK (Realtek)RTL8762D |
| ECG chip | VC8808 |
| Memory | 160KB RAM+64Mbit ROM |
| Screen Size | 1.14 inch |
| Charging Type | USB Charging |
| Colors | Black, Blue, Purple |
| Thermometer | Yes, Support |
| Call Rejection | Yes, Support |
| Sleep Monitoring | Yes, Support |
| Heart Rate | Yes, Support |
| Transport Package | Giftbox Package |
| Specification | CE, RoHS |
| Trademark | OEM |
| Origin | Shenzhen, China |
| HS Code | 85176290 |
| Production Capacity | 2000PCS/Day |