Specification:

LCD Display Dimension:
39x27mm

Speaker power: 1 W

Power Supply:
Built-in rechargeable battery
DC, Working voltage: 7.4V, Li-ion battery
Continuous operating time: > 4 hours
AC recharger

Ultrasound:
Frequency: 2.0MHz continual wave
Intensity: <2mW/cm2 of 2.0MHz
P: <0.35MPa

FHR:
Display: LCD display
Measurement range: 30~240BPM of 2.0MHz
Measurement accuracy: &pluamn;1% or ±1BPM

Dimension & Weight
330 x 230 x 70 mm
0.5kg