·Compact, portable and easy to use ·One key operation, easy to master. ·Integrated design will be more convenient. ·3M probe, high sensitivity. ·Built-in rechargeable lithium battery. ·USB charger, ·3.5mm earphone, restore the true fetal heart sound. ·Streamlined design ·Various color optional to meet the personalized requirement. ·Auto power off after 1min no signal. Standard configuration: Host?Earphone?Ultrasound gel?Rechargeable battery(built in)?Charger