Wireless Active Noise Cancelling 4.1 Bluetooth Headphones with in-line Microphone Up to 30 hrs Playtime for iPhones, Airplane Travel, Smartphones, Tablets, TV & Work (with Slim Power Charger) ACTIVE NOISE CANCELLING: These Universally Compatible Headphones feature Patented Noisehush Technology, which reduces distracting ambient noise by capturing and negating external sound waves APTX & BLUETOOTH 4.1: The Latest in Bluetooth Technology for the best sounding and most reliable wireless transmission possible (up to 33 ft range!) whenever you unplug from the Tangle-free 3.5mm Braided auxiliary cable HD SOUND & IN-LINE MIC: 40mm neodymium drivers provide the ultimate sound quality with enhanced bass for full rich sound. Built-in mic has Noise Isolation Technology that cuts out ambient noises for voice clarity EXTENDED BATTERY: Built-in rechargeable Lithium-ion battery provides up to 30 hrs of Active Noise Cancellation, 15 hrs of Bluetooth compatibility, and 12 hrs combined Bluetooth and Active Noise Cancellation PACKAGE CONTAINS: i9 Headphones  Detachable Tangle-free Braided Auxiliary Cable  1/4-inch Gold Plated Stereo Plug Adapter  Gold Plated Airline Plug Adapter  Micro USB Charging Cable  Hard Shell Carry Case  2200mAh Power Charger  User Manual