Other attributes

Display: 1.77 inch TFT

Probe frequency: 2.5 MHz ± 10%

Fetal heart rate range: 50bpm~240bpm

Resolution: 1bpm Precision: ± 2 bpm

Power consumption:<0.8W

Battery type: 2 * 1.5V AA battery

Normal working conditions:

Working temperature: 5 ℃~40 ℃

Working humidity: 30%~80%

Atmospheric pressure: 70.0kPa~106.0kPa