1 Call Button + 5 Watch Display Receiver
7-Key Call Button
With high strength AS material cover ; Signal Range: >200M in open area; Power supply: one 12V/23A battery ; Dimension: 110*30*60mm ;
Watch - Display Receiver:
Can work with 500pcs multi-key transmitter in max ; Can record when the call come in and count the call times of each number ; Show current time when stand-by ; Battery is rechargeable: 3.7V Lithuim battery ; Output: DC 5V--1A