1. It is waterproof, and the waterproof grade is IPX7. 2. It has calendar, clock and alarm clock function. 3. With fast delete function, it can delete one registered number or all registered numbers with only one key. 4. Downloading the registration information through the serial port, makes the registration easier. 5. It can charge in order to avoid the problem of frequent battery replacement, super standby time (about 5 days). 6. With encryption function, avoiding the information lost by mistake operation. The mobile receiver for server receiving the calling messages of customers.Wireless calling system maintain a quality service environment for your customers. Staff pagers allow you to quickly notify employees when customers are ready to be served or need help. Pagers keep your staff where they need to be - tending to your customers - by giving you the control you need to tasks are tended to in a timely manner. APE6900 is the fifth generation of the mobile receiver. It is also the first waterproof bracelet mobile receiver. The waterproof grade is IPX7. Attention please, it can't be used alone!!! Color: Black Material: ABS Package Contents: 1 * pager Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.