Edifier WH950NB Active Noise Cancelling Wireless Bluetooth Stereo Headset Active Noise Cancellation + Ambient Sound Mode LDAC codec with Hi-Res Audio Hi-Res Wireless certification Advanced 4-Mic ENC for the best voice clarity Personalize EQ and select various music modes in Edifier Connect APP Supports Google Fast Pair for Android users 1.5 hours fully charged for at least 34 hours playtime(ANC ON) / 55hrs(ANC OFF) Fast charging_ 7hrs playback in just 10mins 40mm dynamic driver Double protection for safe hearing_ Volume <85dB and a cut-off timer Foldable and lightweight design. Ideal for daily use, conference meeting and travel Bluetooth V5.3 Bluetooth Protocol A2DP, AVRCP, HFP Audio Coding LDAC, SBC Frequency Response 20Hz - 40kHz Driver Ф40mm Dynamic Output Sound Pressure Level 91dB ± 3dBSPL(A) Playtime ANC On_ 34 hours ANC Off_ 55 hours Charging Time 1.5 hours Charging Port USB-C (Type-C) Input 5V ⎓ 1A Weight 296 ± 1g Dimension (L x W x H mm) 193 x 169 x 82mm