TaoTronics - enhance Your life Move forward, find your possible, enhance your life with TaoTronics. We help people discover products that address life's needs and inspire you to enhance your life. From home goods to gym essentials and audio accessories, move life forward with products designed to match your grit and speed. Noise cancellation: Active noise cancellation (ANC) Speaker: Electro-dynamic 13 mm Frequency Response: 20-20khz Microphone: Micro Electrical-Mechanical system (MEMS) Playing Time：8 hours with ANC on, 16 hours with ANC off What's in the box: 1 x TaoTronics Bluetooth Headphones (Model: TT-BH042) 6 x Ear Tips (2 x already on the headphones) 6 x Ear Hooks (2 x already on the headphones) 1 x Charging Cable 1 x User Manual