Products Description Wireless sport earphone Operating Range 10M BT Profile A2DP/AVRCP/HSP/HFP Working frequency 2.400GH-z-2.480GH-z Loud Speaker Diameter 10mm Battery Model Lithium polymer battery 70mAh Music Playback Time 5 Hours Talk Time 5 Hours Charging Time about 1.5 Hours Company Profile Enterprise Strength Package & Shipment FAQ