Specifications: Bluetooth V5.0, supporting most bluetooth-compatible devices and reducing power consumption. Easy to carry, after taking out it will automatic connect. 8mm dual driver unit, enjoy 9D powerful deep bass music sound. Metal charging box has slide lid design, convenient to use. Type: bluetooth-compatible Earphone Material: ABS Charging Box Material: Aluminum Alloy Support Protocol: A2DP\/AVRCP\/HHFP\/HSP Frequency Range: 20Hz-20kHz Working Range: 8 Meters Earphone Battery Capacity: 3.7\/40mAh Charging Box Battery Capacity: 3.7\/380mAh Talk Time: about 3.5 Hours Music Time: about 3.5 Hours Earphone Charging Time: about 60 Minutes Standby Time: about 180 Hours Battery Box Charging Time: 2H Charge Headset Times: 3 Times Charging Box Size: 60mm x 40mm x 30mm\/2.36\
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