LINDY LH500XW

Design: Over Ear, Driver: 40mm Neodymium, Active Noise Cancellation: 85 reduction of low frequency noise, Bluetooth Standard: 4.1, Bluetooth Chipset: CSR8645, Battery Type: Internal Lithium Polymer, Battery Life: 30Hr ANC Only, 15Hr Wireless Only, 12Hr ANC & Wireless, Impedance: 32 passive mode / 100 ANC mode, Sensitivity: (1mW1KHz 3dB): Passive 93dB ANC 103dB Bass 104dB, Frequency Response: 20Hz 20kHz,Nominal THD: Passive