Volkano Asista H01 Series Bluetooth Headphones Black with Mic & Carry Case Controls: You can easily adjust the volume, skip tracks, play, pause, answer calls and activate Siri or Google Assistant using the headphone controls Memory Foam: The soft earcups give a comfortable fit which moulds to fit your ears Hard Carry Case: Store your headphones and charging cables in the hard EVA case included Bluetooth Operating Distance: 10 m Chipset: BK Bluetooth Version: 4.2 Bluetooth Profiles: HFP, HSP, A2DP, AVRCP Playback Time: 12 – 15 hrs Battery Capacity: 250 mAh Charge Time: 2 hrs Battery Type: Impedance: 16 O Sensitivity: 98 dB Driver: 40 mm ICASA : TA-2018/2043 Power Requirement: 5V DC , 1A Frequency Response: 20 Hz – 20 kHz What's in the box 1 x Volkano Asista H01 Black Headphones 1 x USB Cable 1 x Case