Edifier WH950NB Active Noise Cancelling Wireless Bluetooth Stereo Headset-IVORY 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