Certification:CE & RoHS,FCC Material:ABS Charging Port: Micro USB Packing size: 17X10X6 cm Package content: 1 set of bed wet alarm Wireless Bed-Wetting Alarm: The bed-wetting alarm with a wireless design is more flexible to use. The receiver can be placed next to the pillow, on the bedside table, or from another room to monitor the child's urination status. Reliable Reminder: With a strong vibration and sound reminder, this bedwetting alarm is a reliable way to potty train your child and can remind you to guide your child to the toilet. Comfortable and convenient: The bedwetting alarm is comfortable and convenient to use. You just clip the transmitter along the edge of your panties and it will send an alert message to the receiver. Practical and Thoughtful: This bedwetting alarm is suitable for children, elderly and adults. It can alert them when they get their bed wet. Put on this alarm clock and get rid of the burden and discomfort and regain your freedom and safety.