This is a very user-friendly product for children to go to the toilet. It's armband is equipped with an alarm device with high humidity sensitivity. Place or clip the sensor where moisture can be detected and it will remind you to help your baby go to the bathroom. It also can help the elderly or patients in daily use. Features:1. High sensitivity, the armband is equipped with alarm device, which has high humidity sensitivity.2. Fine workmanship, small and exquisite, easy to use.3. Adjustable elastic armband to ensure a comfortable fit, easy to wear and take off. 4. It can be used for potty training and to help treat bedwetting problems.5. Vibration reminder, when the alarm was activate, there is a voice and slightly vibration to remind you.6. Suitable for the elderly, babies, people with limited mobility or who cannot take care of themselves.Specification:Item Type: Bedwetting AlarmMaterial: ABSColor: WhiteBattery Type: Built-in Button Battery( Included ) Power Voltage: 3V Item Size: 11 * 6cm / 4.3 * 2.4inchWire Length: Approx. 92cm / 36.2inchPackage Weight: Approx. 119gPackage List:1 * Bedwetting Alarm1 * Small Screwdriver2 * Clip1 * English Manual .