The USB charging feature is safe and durable, providing a continuous alarm for 6 hours when fully charged, normal use can be used for 25 days!Our sensor clip is strongly attached to the underwear and is not easy to fall off, providing reliable monitoring all night long. The stretchable cable length is 90-110cm, making it suitable for children and adults.Strong vibrations and buzzing will awaken children and adults, helping them to stop bedwetting. Effective bedwetting training for potty training.3 working modes (sound and vibration, only vibration, only sound). You can choose a way that suits you or your child to use. (Tips: When the bedwetting alarm is alarming, you cannot switch the working modes, please stop the alarm and switch modes.)If any problems with our urine alarm, please contact us without hesitation and our professional customer service will help you.