A Bluetooth Hi-Fi experience on the go is now a reality. The Libretto is here to free you from any doubts you had about enjoying perfect audio wirelessly, wherever you are. The Bluetooth 3.0+EDR chipset allows you to roam around up to 12 metres away from your playback source while streaming crystal clear audio. The on-board control panel also means that you can skip songs and adjust your volume conveniently. The LibrettoÕs high-quality built-in rechargeable battery supports 100 hours of standby and 8 continuous hours of music playback. It also has plush, luxurious Pleather cushions that add to both comfort and style. FEATURES Hi-fi headphones with wireless capabilities and built-in mic and controls Streams audio wirelessly from any bluetooth source device e.g. computer, tablet, smartphone etc. Battery level indicator available on iPhone and iPad [supported in iOS 5/6] Bluetooth 3.0+ EDR supports A2DP 1.2 and AVRCP 1.0 Includes an auxiliary (aux-in) 3.5mm audio jack for wired usage in case of low battery Brushed aluminium on-board control panel Designer high-quality leatherette headband Ultra soft and elastic Pleather cushions Airline adaptor and premium neoprene protective case included SPECIFICATIONS Driver size: 40 mm Frequency response: 20Hz~20KHz Impedance: 32 15% Sensitivity: 1105dB @ 1 kHz Maximum input power: 10 MW Built-in AUX input: 3.5 mm stereo jack Bluetooth V3.0 + EDR supports A2DP 1.2 and AVRCP 1.0 Wireless distance: up to 12 metres Built-in rechargeable battery Continuous music playback: up to 8 hours Continuous talktime: up to 6 hours Standby time: up to 100 hours