QCY 50 Adjustable Wireless Bluetooth 4.1 Dynamic Noise Cancelling Stereo Headphone with Mic ,QCY 50 Bluetooth foldable headphone with mic is yet another affordable and quality product from the company and features noise isolation and cancelling. The 200mAh built-in battery provides weeks of standby time and around 12 hours of music playback time. The over-the-ear headphone is designed to provide comfort and a premium feel, thanks to the soft, wide-angle and adjustable earmuffs. The headset feel sturdy and solid from every angle and has been nicely put together, while the discrete branding and overall style compliments the audio quality.Featuring Bluetooth 4.1 technology and compatible with a wide range of devices, QCY 50 headphones are easy to setup and use. The headset can work well within a range of 20 meters and is designed to produce crisp and crystal clear sound. Considering the price, even audiophiles would appreciate the sound quality that competes with headsets costing 5-10 times more. QCY 50 performs well in a variety of environments ranging from home use to sports, running and doing weights. The smooth, streamlined and glossy design is quite an attention grabber and makes the headset look like a premium high-end gadget. Bluetooth headphones often lack bass and treble, but that’s not the case with QCY 50 as it produces a decent amount of bass without over powering the sound.