Features: Wireless Bedwetting Alarm: Transmitter and receiver are separated, without any annoying connection cable. Parents can place the receiver next to the pillow, on a bed-side table, or monitor children's pee status from another room, more flexible to use. 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/ 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 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 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 by the charging box at the same time. When not charging, can work as a storage box for storing and carrying the bedwetting alarm conveniently. Specifications: Charging Voltage: 5V 1A Charging Time: 40-60min Effective Range: 10-20M Transmitter Battery: 55mAh Receiver Battery: 300mAh Transmitter Size: 4 x 2.7 x 1.3cm/ 1.6 x 1.1 x 0.5in Receiver Size: 6.5 x 5 x 1.5cm/ 2.6 x 2 x 0.6in Charging Box Size: 14 x 6.8 x 2.3cm/ 5.5 x 2.7 x 0.9in Color: White Material: plastic Package Contents: 1 x Transmitter 1 x Receiver 1 x Charging Box 1 x USB Charging Cable 1 x Users Manual(English & Chinese) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.