... the functions of adjusting distance(1-15m random adjusting), anti-lost, searching, alarm with vibrating and auto-saving electricity.etc. ... protect.receive and transmitter alarm triggered distance :1-25m adjustedanti-lost, searching function, alarm with vibrating convenient use, easy operation, ... portable.PACKAGE:Transmitter: 44 (H) ×28 (W) ×8 (D) mm. Weight: 9.3 g. Battery: CR 2032 ×1 (3V)Receiver: 46 ...