Features:

Safe: Ultrasound dosage is under 50% of the standard.

Duralbe: Huge capacity battery, work more than 12 hours after full charge.

Convenience: Single key control and automatic battery recharge and protection.Sensitivity: FHR of fetus 9 weeks up.

More usage: Examine Fetal Heart Rate and umbilical blood according to different need.

Quality sound: Quality speaker take more clear and loud sound.