product Product Product Material: ABS Package size: App.10.5x10.5x4.5cm/4.13x4.13x1.77in Batteries: 2 X CR2025 batteries (included) Package Contents: 1x Bed Wetting Alarm, 1x Screwdriver, 1x User Manual. Features: High sensitivity: The alarm has high sensitivity to wetting. Mini size, small and exquisite:The product is small in size which is also portable. Potty training helper:Good to use for potty training and help cure bed-wetting problem. Good alerts and life helper: After triggering the alarm, there is a voice and it gently vipates to alert you. No longer wetting the bed, you may have restful nights and less laundry after having such a good item. Wide application:Suitable for babies, elderly and fragile people who cannot take care of themselves.