Applicable to detect fetal heartrate from the twelfth week
Built in loud speaker with connection to recorder and earphone
Big LCD of 3x23cm with backlight
Two operation mode of realtime FHR and average FHR
Compatible with AA alkaline battery or AA rechargeable Ni-MH battery
Automatic power off in 1 minute without any operation
Sound alarm for FHR beyond normal range and lower battery capacity
Indication of volume, battery capacity, FHR dynamic graph
Water proof interchangeable probe of 2.5MHZ
Two color for choice: blue and pink
8 hours of continuous operation