This lightweight headset offers up to 19 hours talk time and as much as 11 days standby, along with up to 9 hours of music streaming. At only 45 grams, you’ll hardly notice anything but the extraordinary sound. The Bluetrek ST1 Bluetooth Stereo Headset features 2 pre-registered number redialing, and provides a handy forward, backward and pause button that allows you to control the music play on an MP3 or mobile phone. Compatible with Bluetooth enabled devices such as mobile phones, PDAs, and computers that support the Bluetooth (A2DP & AVRCP) profile. Grab the Bluetrek ST1 Bluetooth Stereo Headset while you still can!