Product model no.M2137E1
    Earbud input parameters5V⎓ 100mA
    Charging case input parameters5V⎓ 450mA
    Wireless connectionBluetooth® 5.2
    Bluetooth protocolsHSP、HFP、A2DP、AVRCP
    Operating distance10m (open space free of obstacles)
    Single earbud net weightApprox. 4.5g
    Total weight including charging caseApprox. 55g
    Charging portType-C
    Speaker impedance16Ω±15%