Keep talking for longer with the Plantronics ML18 Bluetooth headset. Its super charged battery life enables up to 11 hours of talk time, and it has a handy power on/off switch, letting you extend battery life even further. So you can do more talking, and less charging. iPhone users can also monitor the ML18's battery strength on their screens. The ML18 whispered voice alerts let you know talk-time, volume, connection status and more. The headset is ergonomically designed for a comfortable fit in either ear, and also reduces wind and other background noises from your calls.