The FD1 combines high sensitivity with excellent audio quality. It is easy to use and provides optimum foetal heart detection from 8-10 weeks gestation. The FD1's active noise reduction technology ensures crystal clear audio and the high sensitivity 2MHz probe is waterproof. • Advanced real time auto-correlation foetal heart rate processing • Active noise reduction for crystal clear foetal heart sounds • Waterproof probe suitable for use in a water birthing environment • Advanced power management with auto switch-off to conserve battery life • Long robust coiled cable enables optimum probe position in all circumstances • Large carry bag • 5 year warranty