Features: transmission distance: 10 meters. 360 degrees rotating design, suit for left and right ear. Support adjust volume and change music Battery capacity of the headset: 60mAh Battery capacity of the storage box: 500MAH Noise Reduction: the CVC 8.0 The Working voltage: 3.7 V Charging voltage: DC5V Charging Time: About 1.5 hours Talking time: 5-6 hours Music time: 5-6 hours Frequency response: 50Hz – 20KHz
