Brand: Edifier Model/PN: 012987 Type: Bluetooth over-ear headphones Type of Control: Button Interface : Type-C Headphone Connectivity Technology: Bluetooth Headphone Type: Over-Ear Microphone: Yes Number Of Speakers: 2 Active Noise Cancellation: Yes Driver/Speaker Diameter: 40 mm Frequency: 20Hz - 40kHz Sensitivity: 91±3dB(A) Impedance: 32 USB Q-ty: 1 Headphone Cable Length: 1.2 m Bluetooth: 5.0 Battery Description: 400mah Charging Time: 1.5 hours Music Playback Time: Up to 49 hours Color: White Weight: 220 g Warranty For Individual Customer: 24