This item is a bedwetting alram which features loud sounds and strong vibration. It is powered by 2 button . Beeping sounds synchronized with strong vibration, only vibration, power off settings are integrated into one single . Any drop of urine detected by the metal clips triggers an alert motivating your child to get up to ask for help. Feature - ColorAssorted Color - Material: Plastic - Size: 120x8x3cm - This intelligent device is designed to detect the first hint of moisture and it will wake up kids at the same time. - Help kids to develop good habits. Parents do not need to worry about bedwitting will trouble you kids at night. - It features loud sounds and strong vibration, so it will definitely wake up kids. - Powered by 2 , low power consumption, much safer. - The sensor is when it's just a little bit moisture Package list: 1 x Bedwetting Strong Vibrations with Loud Sounds for Heavy Sleepers Kids and Old People 2 x Button Cell