SNLSY Bluetooth Headphones Over Ear Hi-Fi 40mm Driver Foldable Portable Control Wireless Bluetooth Headphones Built-in Mic Soft Earmuffs White Hi-Fi STEREO SOUND: 40mm large-aperture driver units and CSR 4.1chip provide faster transmission speed, lower latency and better audio output. Provide immersive listening experience in natural sound. Foldable design: Folding and lightweight design makes it easy to be carried and stored.Just 260g, lighter than most over ear headphones, and better to wear all day long. Hands-Free Call & mic: A built-in microphone and on-ear buttons allow you to answer and end calls, change tracks, and adjust volume directly from ear cup. Simple To Use: Portable Function Control Buttons are Designed for Easily Operation.You can control all functions of music and calls easily via the buttons on the headset. 12-Monuth Warranty Service: 12-month warranty which will try our best to provide you with quick response , which will always serve for you and certainly satisfy you.