Usams YN001 Wireless headphone Stereo Foldable Car Headset Earphone Indoor Outdoor Music Headphones

BT Version: 4.2
Connection Distance: ≤10m
Impedance: 32Ω
Speaker Diameter: 40mm
Speaker Sensitivity: 121dB±3
Frequency Range:50Hz~50KHz
Battery Capacity: 250mAh
Playing Time: About 10h
Charging Time: About 2h
Stand-by Time: About 3 months
Weight: About 200g
Compatibility: For devices with BT function
Features:
1.40mm speaker, powerful 3D surround sound.
2.Fully enclosed noise cancellation, make calls clear.
3.Independent button control, easy function switching.
4.Soft and comfortable caps, light and adjustable arm.