Product Specification: Bluetooth specification:V5.1 Charging voltage:5V-1A Battery capacity of the headset: 50MAH Battery capacity of the storage box:2000MAH Transmission distance:10-15M Call time:4-5h Play time:4-5h Waterprof :IPX5 Charging time of headset:1h 12.Charging time of the Charging box:1-2h Products include 1 * One pair of Bluetooth headsets 1 * Charging box 1 * Charging cable 1 * User Manual