Earphone and speaker are feasible
High sensitivity doppler probe
Low ultrasound dosage
Display with color LCD
Ultrasound frequency: 2MHz
Ultrasound Intensity: <10mW/cm2
Waterproof design:IP22
Power supply:
AC 220/110V, 50/60Hz; DC 2pcs of Ni-MH rechargeable battery
Display: 45*25mm LCD
FHR Measuring range: 50-230bpm
FHR resolution: 1bpm
FHR accuracy: ±2bpm
Power consumption: <1W
Dimension: 146mm*100mm*33mm, weight: 500g

Main body 1pc
Rechargeable battery (with USB adaptor) 1pc
2MHz probe 1pc

Bluetooth, Earphone, Carry Bag, Gel