Portable Power Source

HAVIT G1 Series TWS True Wireless Earbuds, Wireless Charging, IPX6 Waterproof, Bluetooth 5,0
BLUETOOTH VERSION:5,0OPERATING RANGE:10mPLAY TIME:Up to 21 Hrs (With Charging Case)IMPEDANCE:16Ω±15% 1kHzPROFILE SUPPORTED:HSP | HFP | A2DP | AVRCP | TWS | AACWATERPROOF:IPX5