* Calculating FHR with the same DSP techniques as used in Fetal Heart monitor, and ensure the FHR accuracy and reliability. * High sensitive transducer, Low ultrasound power, safer to the fetal. * Friendly man-machine interface, easy to use. * Built-in speaker. * 3 AA batteries (dry or rechargeable) powered with battery power status indicator. * Battery management function: in the normally working state, it will power off automatically if no signal after 1 minute. * Physical Characteristics: Size: 32(Depth)*145(width)*97(height). Weight: 290g±20g(Including battery). * HS code: 9018199000
