The 2nd Generation Top Dawg Dual Ear Noise Canceling Stereo over the Head Bluetooth headset combines 4X anti-noise cancellation technology, bluetooth 4.0 and digital signal processor (DSP) with high quality stereo sound. The bluetooth 4.0 technologies improves the sound quality over the already incredible sound of the 1st generation headset. This Dual Ear Stereo Bluetooth Headset is very comfortable for extended use, and an ideal product for industrial, windy, and hard-to-hear environments. This headset is compatible with all Bluetooth cell phones as well as other devices. When used together with Bluetooth dongle in offices, the headband Bluetooth stereo headset makes you enjoy clear, hands-free chatting on SKYPE or web phones. Plus, this headset is perfect to use with laptops for watching DVD movies and with playstation and other gaming devices! And with a 20 hour talk time battery and 500 hour standby battery, you will rarely need to charge this headset.