Water Power Clock 

1.Simply pour water into the tank of the waterbattery( about 3/4 full). (Note: use the tap water can fit for it)

2.That's it!. Work like any other clocks operate using dry cells (batteries).

3.Water could last for weeks. Just refill until the water level is low. The garentee of the water battery is one year,but in fact it can use more time .

.4.the advantage of this product  is :it ,s not produce waste material,good for the environment And you can use it until the end life of the water battery .