Specifications:

Display: 45x25mm LCD display
Heart rate range: 50~210bpm
Resolution: 1bpm
Audio sampling frequency: 4KHz / 8KHz
Recording length: 480s/240s
Audio output power: 0.5W
Auto shut-off: 1 minute
Size: 32mmD x 85mmW x 138mmH
Weight: 290g
Batteries: 2x AA

Accurate fetal heart detection with high-fidelity sound
In case that some tests are carried out without a doctor beside,
the nurses might need to report some abnormal FHR status after the tests.
EDAN provides a record & play feature which will help with such situation.
Doctors will be able to check on the FHR data changes as well as the FHR sound just like he/she was there by the tests.