Rock O2 Wireless Headphone Noise cancellation Bluetooth Foldable Headset with Built-in Microphone Earphone

Elegant appearance, superior tone quality, lighter & smaller.Noise cancellation.Built-in 40mm NdFeB drive init with surround acoustic system.Comfortable over-ear cushion, the combo of eco-friendly material and soft sponge, provides extended comfort and added noise isolation.PU leather beam, matte grain on the beam is non-slip and provides more stable wearing.Foldable design, it can be adjusted freely for a different size.Compatiable with iOS & Android system (There might be compatibility issue with some Macbooks.).Model Number: RAU0660Bluetooth Version: V5.0 Pairing Name: rock space O2Working Distance: Appr. 10MSpeaker: Φ14mmFrequency Response: 20Hz-20kHzMIC Directivity: OmnidirectionalMIC Sensitivity: -38±3dBMusic Time: Appr. 15hrsCharging Time: Appr. 2hrsBattery Capacity: 400mAhMaterial: Al-alloy, ABS, PUWeight: Appr. 187gWhat's in the box: Headphone x1, Aux cable x1, Charing cable x1, User Manual x1