1---Wireless and Rechargeable: No need to worry about wires getting tangled or batteries running out with this Wireless Bedwetting Alarm. The transmitter and receiver have built-in rechargeable lithium batteries. This makes the alarm more convenient and safer for your child. 2---Better Sleep: This Bed Wetting Alarm will help your child stay dry and comfortable throughout the night. It has a wireless sensor that clips to the underwear and a wireless receiver that sounds or vibrates when wetness is detected. This wireless bedwetting alarm is ideal for children, elders, and patients who need daily care and want to overcome bedwetting problems. 3---Easy to Operate: With the Bed Wetting Alarm, you can nap with confidence. Just clip the urine sensor along the edge of the underwear and wear the watch receiver on your hand. The alarm will alert you when it detects wetness, so you can change quickly and easily. It is a convenient and easy-to-operate solution for children who wet the bed. 4---Smart and Convenient: This Wireless Pee Alarm Watch for kids lets you select 1 of the 4 modes: 30min, 60min, 90min, or 120min. It guides your child to go to the bathroom at the right time and makes potty training more fun. No more wet nights and messy sheets! 5---3 Reminder Methods: This Bedwetting Alarm For Children has vibration, voice, and vibration and voice modes to help you improve your bedwetting habit. You can choose the most suitable 1 according to your preference and sleeping habits. Material: ABS Product size: 5.5*4.5*2.5cm Lithium battery: 300mah