Tenders for Supply of Portable Foetal Hand Doppler. Specification- 1 Lightweight Easy To Carry 2 Bluetooth Based Conne Ctivity 3 Built In Speaker 4 Built In Digital Display For Vitals. 5 Record And Share Your Babys Heartbeat 6 Han Dle Use Anytime And Anywhere 7 In- Built Li-Ion Rechargeable Battery.