It's also nice that the unit displays the heart rate detected. After comparison with my own heart rate, I knew I really found my little residents. :-)
I give the unit 5 stars because everything works fine, the handling is easy and I fully think the price for this extremely better equipment in order. I welcome also that you do not have to compulsively use a headset at the Sonoline, but the device has its own speakers.
Ordered purbay the retailer, because since the ultrasound was included with. Delivery was there within 2 days of order.