Fetal Doppler,doppler ultrasound machine JPD-100S6, best seller on ebay and amazon:

This portable fetal doppler is highly recommended by the Chinese MOH.It is widely used by hospitals,clinics,midwives and families.

Safe:The ultrasound is lower than the national ultrasonic power standard by over 50%.
Portable:Compact and portable design provides a convenient use and carrying.
LCD display:Large backlight LCD displays the fetal heart rate.
Loudspeaker:Built-in speaker gives clear and loud voice.
Interchangeable waterproof probe
Automatic shutdown function in case of no work for one minute.
High sensibility can detect the pulse of 12 week fetus.
Three calculation modes to calculate fetal heart rate: instant, 10 second average and manual

SPECIFICATIONS:

Display: LCD display
Ultrasonic frequency: 3.0MHz ±3%2 Ultrasound intensity :<2.5mW/cm
Heart Rate Range:50-210BPM
Resolution:±1 BPM

Audio output power:0.5w
Auto Power-off:1 minute with no signal or operation
Power:AA*2
Size:130mm*90mm*34mm
Weight:Main body 0.2kg

Packing detail:

- 1 x Fetal Doppler (with rechargeable battery)

- 1 x Line-in Cable

- 1 x English user's manual

- 1 x Recharger

Package and delivery:

♥  Package:20 units/Carton,12kg/Carton

♥  Port: Shenzhen/HK

♥  Delivery time: 10 working days after Receipt of Payment

♥  Payment terms: T/T,Westernunion,Paypal