1. Material: ABS
2. Rated voltage: DC3V
3. Ferry heart rate range: 50bpm-230bpm
4. Precision of fetal heart measurement: +/- 2bpm
5. Ultrasonic frequency: 3.0MHz
6. Power method: dry battery
7. Battery: No. 5 battery x 2 (without the battery)
8. Waterproof level: IP5
9. Built -in speaker and audio output interface, you can listen to your baby’s heartbeat fresh
10. Built -in intelligent noise reduction and sound insulation unit, effectively reduce noise, and clear output
11. Large -sized LCD display, convenient for reading
12. The instrument will have no operation in 60 seconds in the boot state 13. Automatically shut down without waste of the power
14. Product size: 7.8 x 6.8 x 3.2 cm
15. Net weight: about 140 grams

Packing list:
-Gethery x 1
-3.0 MHz probe x 1
-The manual x 1