KW13

Chip: Bluetrum 5656C3/5416+OVP
Version: 5.4 [Dual-ear calling]
Operating frequency: 2.402-2.480GHz
Transmission distance: 15M [Unobstructed]
Frequency response: 20～20000Hz
Battery Type: 300mAh with protection board (3C fast charging battery), headphone battery 40mAh
Charging Time: 1 hour
Headphone Working Time: Approximately 5-6 hours of continuous playback at 100% volume (tested)