Pocket Fetal Doppler is primarily used for detecting rate of heatbeat of foetus from 12th week. It has in-built battery that can be recharged and works for over 8 hours without interruption. With gallus, it characterizes carrying convenience and weighs 270g. Device has in-built speaker and earphone jack collocates it. Being easily replaced, it is 2.5MHz probe. For blood stream, it is 5.0MHz probe. It maintains executive standard of EN61266:1995. Its ultrasonic intensity and frequency measure ?10mW/sqcm and 2.0MHz±10% respectively. With comprehensive sensitivity more than equal to 90dB, Isptp measures ?0.1MPa. It has 9V dry battery or 8.4V Ni-MH battery that is recharged. Adapter input voltage is AC 110V±10% 60Hz / 220V±10% 50Hz. With audio output intensity ?1W, uninterrupted working time is fixed at ?3h. While working temperature varies between 10-40?, humidity is ?80% and atmospheric pressure lies within 86-106kPa. For single unit, the packaging measures 24cm x 23cm x 12cm in dimension, having 1.5 kg of gross weight. For 20 pcs/carton, it measures 44cmx36cmx42cm, with 18kg gross weight.