Description: Impressive sound quality: Bluetooth headphone features with a 40mm large diameter aperture drivers and high detail microphone. Wide frequency range reproduces precise deep base and high clarity sound. You can expect comfortable listening experience for both music playing or phone calls. Never power off, both wireless & wired: The wireless mode: 15-hr music time/20-hr talking time in a single charge; The Wired mode: you can also use it as a wired headphone with the provided audio cable so the headphones will never power off. Over ear noise isolation pads: The ear cushion is made with protein, high soft elasticity, can be completely isolated from the outside noise when it cover ears, keep your skin feeling soft, comfortable and breathable, very suit for a long time wearing. Built to stay comfortable: The ear cushion simulate human skin texture, ensuring lasting comfort. The stainless steel slider and softly padded headband allows you to find the perfect fit without constraint and provide excellent durability. Take your tunes to go: Space-saving foldable design not only saves space but also makes it portable. Best choice to take it study, outwork, travel. Features: This headset can be folded when you don't use it. Embedded microphone for hands-free conversation from Bluetooth-enabled mobile phones. Enjoy stereo music wirelessly from bluetooth devices. Pause the music and play back automatically when receives an incoming call. Support remote control of play/pause, previous/next track, volume up and volume down. Call transfer between the headset and bluetooth mobile phone. Automatically connect to the last connected Bluetooth device. Charging by USB moric 5 pin jack. Supports wireless and wired music playback. When the headset has no power, you can plug in the audio cable to play music. Support for inserting TF card, not just Bluetooth function This product can be fingerprint smart , incorporating the latest technology Description: Bluetooth version:4.0 Operation distance:10M Range of frquency:2.0 to 2.4835GHz Frequency response:20HZ-20KHZ Impedance:32Ω Sensitivity:105dB TF card: support Rechargeable lithium battery:400mAh Speaker:40mm Charger Time:2-3 hrs Play Time:8-10 hrs Talking time: 4-6 hours Standby Time: about 200 hrs Package Include: 1 x Headset 1 x USB Charging Cable 1 x Audio Cable 1 x User Manual Note: The colours deviation might differ due to different monitor settings.