***** **********Best Quality Guranteed. *****01. Waterproof. (It can be put into 3.3 ft ( 1.0 m) deep water, then it still can work for more than 30 minutes. )*****02. Has calendar, clock and alarm clock function. Rechargeable battery, super standby time (about 5 days). *****03. With fast delete function, it can delete one registered number or all registered numbers with only one key. *****04. Can download the registration information by charged software, makes the registration easier. *****05. With encryption function, avoiding the information lost by mistake operation.

06. OLED screen, thinner, lighter and more flexible anti-seismic and knock.