Pills Mini True Wireless Headphones BT6 - Black

OverviewInput : 5V/ 400mA (USB-C) Working Time : 4 hours (earbuds) No. of Charge : 3 times (case) Longest Working Time : 16 hours (w/ charging case) Battery Type : Li-Polymer Battery Capacity : ~50mAh (earbuds) ~550mAh (charging case) Charging time : ~1.5 hours (earbuds) ~1.5 hours (charging case) Driver Type : 6 mm Frequency Response : 20-20KHz Impedance : 16Ω ±10% Sensitivity : 105db ±3dB Supported Profile : A2DP1.3, AVRCP1.6, HFP1.7, HSP1.2 Wireless Frequency : 2.4GHz - 2.8GHz Effective range : 10m (line of sight)