
| Display | 45mmx25mm |
| Ultrasound Frequency | 3.0MHz |
| Auto power-off | Automatically power off within 60s±10s if not receiving any incoming signal |
| Power | Dc3V (2*AA]Alkaline/rechargeable batleries |
| Ultrasonic Output Capacity | <20mW 65bpm-210bpm,in which the error is within ± 2bmp ldigital results model) |
| Comprehensive sensitivity | No less than 90dB when it is 200mm away from the surface of the probe. |
| Weight | 500g (including batteries) |
| Dimension | 29mm x 91mm x 34mm |
| Package dimension | 130mm x 104mm x 35.5mm |