3-in-1 transmission: 2.4G USB dongle +BT+Type-B Cable Reading range (open air): 2.4G:100meters BT: 40meters. Large 2000mAh battery, 60days standby Charge time is 4 hours and continuous scanning time is 12hours. Support double firmware upgrade online: wireless and decoder. Support for offline storage mode, can memory 380,000 characters (EAN-13 ..