Multiple Reminding Ways: Supports 3 reminding modes, you can chose vibration, sound or sound ' vibration reminding way to alert you to wake your kid up and guide her/him to toilet. A very reliable bedwetting alarm for kids potty training. Easy and Convenient to Use: Just clip the transmitter along the edge of the underpants, then it will monitor kids' pee status and send alarm information to the receiver wirelessly, easy and convenient to use. More Love & More Care to Bedwetters: This bedwetting alarm is helpful for keeping babies stay away from butt skin diseases, solving bedwetting problem of little children, and giving more care to elders with special diseases. Charging Box & Storage Box: The transmitter and receiver both have built-in rechargeable lithium battery, and can be charged by the charging box at the same time. When not charging, the box can work as a storage box for storing and carrying the bedwetting alarm conveniently. Specifications: Color: White Charging Voltage: 5V 1A Charging Time: 40-60min Effective Range: 10-20M Transmitter Battery: 55mAh Receiver Battery: 300mAh Transmitter Size: 4 * 2.7 * 1.3cm/ 1.6 * 1.1 * 0.5in Transmitter Weight: 8g/ 0.3oz Receiver Size: 6.5 * 5 * 1.5cm/ 2.6 * 2 * 0.6in Receiver Weight: 28g/ 1oz Charging Box Size: 14 * 6.8 * 2.3cm/ 5.5 * 2.7 * 0.9in Packing List: 1 * Transmitter 1 * Receiver 1 * Charging Box 1 * USB Charging Cable 1 * Users Manual(English & Chinese)