B2 Wireless Bluetooth 5.1 Foldable Noise Reduction Headset(Black)

Feature:1. Upgrade Version5.1 Bluetooth, no delay, efficient and smooth continuous conneciotn;2. Rotatable folding microphong, practiocal but not cumbersome;3. Ultra-long battery life design, charge once for a week4. 40mm large moving coil unit, the original sound is close at hand.5. Support both wireless and wired modes, to meet different usage scenarios.Description:1. Bluetooth Version: V5.12. Bluetooth Distance: 10m3. Battery: 3.7V/400mAh 4. Play time: 6-7 hours5. Resistance: 32 ohm6. Frequency Response: 20Hz-20KHz7.Sensitivity: 105DB8.Charging port: TYPE-CPackage included:Bluetooth headset x1Charging cable x1Audio cable x1Manual x1