This Timer Padlock Timer Lock is a great tool for sharing devices. It is easy to set the timing. You can set the timer lock for 99 hours, 99 minutes, or 99 seconds. When the timer runs out, the lock will be automatically locked. This lock is USB rechargeable, so you don't need to buy batteries. The lock has a large LCD display, so you can see how much time is left on the timer. The lock is made of high-quality materials and is very durable. This lock is perfect for devices such as computers, laptops, tablets, and more.