Fetal Doppler BF-500B
Professional Doppler with blue backlight LCD to also be able to see in the dark FHR signal, battery indicator and volume control.
With this Doppler you can hear the heartbeats of unborn babies from 10-12 weeks and up. The Fetal Doppler is of the same Quality as medical doctors have been using for the last 30 years! The technology just recently became available for consumer mass markets!

Specifications of the Doppler:
- volume control
- built-in rechargeable 9.6V batterie which serves for over 5hrs and with AC adapter
- blue backlight LCD to see FHR signal, battery indicator, volume control and alarm indicator 
- ultrasone frequency 2MHz
- ultrasone intensity: <5mW/cm2
- alarm function in case the FHR is out of range
- doppler frequency: 0 - 3KHz
- effective serviceable range of the transducer: 6 ± 0.5 cm2
- net weight: 270 gr 
 
Package includes:
- adapter for the rechargeable batteries
- English manual
- carry cord and head-set
- tube gel...can also be ordered seperately

If you don't feel comfortable yet with the information offered, you can always consult the manual of the BF-500B which can be found here!

The manufacturer of this fetal doppler ships worlwide already for year professional medical equipment and has been certified ISO and CE.
The certificate can be found here !