The true workhorse of Sony Ericsson?s Bluetooth headset range is Akono? Headset HBH-300, offering the best possible sound performance, especially in noisy environments. It has been designed with business people in mind, and copes easily with long days filled with calls in the office or in the car. Sound performance is optimised by an extended boom which puts the microphone nearer to the caller?s mouth and a noise cancelling function which reduces background sound. A talk time of up to 10 hours and standby time of up to 300 hours means that the headset can last for several days? intense usage before needing a recharge. Sony Ericsson Akono Bluetooth Headset HBH-300. Amazing battery life.