Will be in new delhi from feb 1st to 5th, 2013 pocket fetal doppler mainly applies to detect the fetal heartbeat rate from the twelfth week Lcd can display fhr, synchronous fhr signal, battery indicator, volume of sound and alarm indicator accurately Built-in rechargeable battery can work continuously more than 5 hours Blue backlight lcd display for use conveniently at night Automatic power off ( one minute), self-detect function, and alarm function when fhr is out of the normal range or battery power is in shortage Only 270g, can be carried conveniently with a gallus Built-in speaker and collocated with earphone jack 2.0mhz probe. Single unit dimension: 24cm x 23cm x 12cm gross weight: 1.5kg 20 pcs/carton dimension: 44cm x 36cm x 42cm gross weight: 18kg Normative collocation: gallus, operation manual, approval certification, warranty card