Volkano Silenco Series Noise-cancelling Bluetooth Headphones Features: - Block out the hustle and bustle of everyday life and become immersed in your music with the Silenco Series Noise-cancelling Bluetooth headphones - The headphones also feature on-ear music controls, collapsible design and a stylish carry case Specifications: - Colour: Black - Battery: 300mAh Li - Range: 10 metres - Charge Time: 3 Hours - Playback Time: 16 Hours - Driver Size: 40mm - Sensitivity: 105dB +/- 3dB - Frequency Response: 20Hz to 20kHz - Profiles: A2DP, AVRCP, HFP, HSP What's in the box 1 x Silenco Series Noise-cancelling Bluetooth Headphones 1 x Carry-Case