BM-605A pocket doppler offers detecting fetal heart rate through the last trimester of pregnancy to the baby's first moment of life, can be used in hospital, clinic, home etc, it can display the fetal heart rate with blue backlight LCD, digital volume control attached an earphone and a small bag. Specification: Power:9.6 V rechargeable batteries or 9v cells Ultrasonic frequency:2.5MHz+/-0.25MHz Ultrasonic intensity: <5 mW/cm2 Net weight:0.2kg Gross weight:0.6 KG Unit size:200Lx165wx65hmm Packaging: Environment paper box Quantity 20 units Weigh t:4 KG Size:45lx35wx35hcm Product lead time: As early as possible Price/we will give you the rock bottom price Sample: Will be send you on demand after you pay for it. We are looKing for buyers all over the world for our product