New YX12 Bluetooth Headset Mini Single Ear in-ear Mini Wireless Headset Sleep Invisible Headset

YX12 parameter: Bluetooth version: V5.3 Bluetooth chip: Jerry 6973 Bluetooth distance: about 10M Earphone battery: 35MAH Speaker: F8 genuine copper ring Earphone colors: black, white, pink, skin tone Listening to music and conversation time: about 4 hours Charging time: about 1 hour Frequency: 20Hz-20KHz The impedance is 32 ohms. Sensitivity 115dB/mW Waterproof grade: Lifetime waterproof Bag size: 14 * 8 * 1cm Full set of color box packaging size: 9.5 * 6 * 2.2CM Weight of the entire color box: 21G Accessories: user manual, charging cable, 1 earphone.