Soundcore by Anker Life Q35 Multi Mode Active Noise Cancelling Bluetooth Headphones with LDAC for Hi Res Wireless Audio, 40H Playtime, Comfortable Fit, Clear Calls, for Home, Work, Travel Transport Mode-Cancels out up to 95% of engine noise to give you a more restful journey Outdoor Mode-Reduces the din of cars driving past and blocks out the noise of the wind Indoor Mode-Adjust to suit quieter locations while still blocking out distracting sounds. According to regulations, the maximum volume of headphones should not exceed 100dB. In order to protect your hearing, Life Q30 maximum volume has been set to around 95dB. It is recommended that you do not listen to excessively loud volumes for long periods of time. For optimal noise cancellation, make sure the earcups create a tight seal around your ears. Playtime varies according to volume and audio content.⁩ Headphones Jack 3.5 mm Jack Connectivity Technology: Wireless Wireless Communication Technology Bluetooth Special Feature Fast Charging Specific Uses For Product Travel Charging Time 2 Hours Control Type Media Control Cable Feature Without Cable Frequency Range 16Hz-40kHz Unit Count 1 Count Control Method Touch Battery Life 40 Hours Audio Driver Type Dynamic Driver Bluetooth Range 10 Meters Carrying Case Battery Charging Time 40 Hours Carrying Case Weight 0.1 Pounds Earpiece Shape Curved, around-ear shape Is Electric No Product Dimensions 7.68 x 7.09 x 3.07 inches Batteries 1 Lithium Polymer batteries required. (included