1. All brael dopplers have excellent sensitivity.
2. We offer the most advanced fetal doppler available today: fd-10d - compact with built-in transducer and speaker.
3. Special wide angle probe - for fast detecting of fetal heart.
4. Automatic volume control - users have constant volume indepedent of the heart signal. Very comfortable for user.
5. High quality sound - we use special filters and speakers.
6. Auto and manual count of the heart rate
7. The longest life of batteries: 16 (fd-10d) to 32 (udt-20d) hours.