New private noise reduction wireless Bluetooth headset TWS in ear sports stereo game headset Article No.: yw-f9 Transmission range: 10M Functions: power display, call function, voice control, support music Bluetooth protocol: 5.0 Channel: stereo Usage: earplug type Basic parameters Product model: M28 Bluetooth Version: V5.1 Endurance: about 5 hours Standby time: about 180 hours Impedance: 329 Rated input: 5V Horn size: 8mm Frequency response: 20Hz-20KHz Transmission distance: about 10m Lighting effect: control mode of colorful atmosphere lamp Intelligent touch noise reduction version: cvc8.0 Product function: up and down music switching volume increase and decrease call / reject play / pause calling voice assistant