Sumvision Psyc Wave RX Wireless Bluetooth 4.1 Stereo Hi-Fi High Efficiency Headset Headphones CVC 6.0 Noise Cancellation Hands Free Built-In Microphone Ideal for Mobiles, PC, Laptop, TV & Travel. RX Tune Tonally Balanced Sound Enhancement Precision engineered Rare Earth Element Neodymium 40mm drivers with Pro Tuned Sonics Ultra-Light Ergonomic UK Design & Plastic Protection Cover Light Balanced Weight. Optimised Oval-shaped Closed Back earcups with High Flex Metal Headband for the Most Comfortable Fit Eco-Efficient Energy Saving Pro IC Quick Charge 2hrs gives 25hrs Continuous Playback on High Volume, and up to an Incredible 40hrs on Low Volume Universal Bluetooth 4.1 & Aux Compatibility Works with All Bluetooth enabled Devices with Backwards Compatibility + Direct Aux port connection for the Purest sound Ultra-Clear Built in Microphone Noise Cancellation CVC 6.0 Clear Voice Capture Noise Cancellation Technology for Hands Free calls with One Touch On-board Control