YSP27 BT5.4 High Definition Calling Big Battery OWS BT Wireless Earphone Wireless Headphone
BT: Bluetrum 5656C V5.4 | OWS (Open Wide Sound) | ENC Function | Using time: 25 Hours(Total) | Battery: 400+40+40mAh
Model:YSP27 BT5.4 OWS Clipping Wireless Earphones