... IRSJ003, IRSJ004,IRSJ006, IRSJ013USB portMINI or MICRO USBBatteryBuilt-in, rechargeable, 3.7VStandby time, no charging1 monthAdapter5VAlarm noise85 ... more secure.3. About IRACING Shenzhen Iracing Electronics Technology Co., Ltd is a professional manufacturer of EAS system products ... customer's efficiency. Since established, IRACING believes in managing concept of integrity, innovation and best service ...