IMPRESSIVE SOUND QUALITY: Riwbox XBT-80 is a bluetooth headphone features with a 50mm large diameter aperture drivers and bulit-in 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. | BUILT TO STAY COMFORTABLE:The Memory-protein 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. | NEVER POWER OFF, BOTH WIRELESS & WIRED: 1. The wireless mode: A built-in 420mAh battery provides up to 13-hr music time/15-hr talking time in a single charge; 2. The Wired mode: you can also use it as a wired headphone with the provided audio cable so the headphones will never power off. | 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. | Riwbox Bluetooth headphones XBT-80 fit the modern city lifestyle for everybody, no matter you are office worker or student, teenager or...

Extended Compatibility Compatible with iPhone, Android phones, iPads, Tablets, Portable Music Players, MacBook, Laptop PC, wired connection is also available by inserting the 3.5mm audio cable (included). PLEASE make sure the driver software of receive adapter is fully updated when connected to PC or laptop, and you need a SEPARATE Bluetooth adapter when connected with TV. Notes: 1.The headset needs to be fully charge before first-time use. 2. If the headset is left unused for over two weeks, please recharge it periodically. 3. If you can't connect this headphones to your cell phones or other devices, please ask us for a complete FAQ guidance of Bluetooth Headphones, you can find the solutions finally! Specification Driver diameter: 50mm Impedance: 32 Sensitivity: 107dB 3dB Frequency range:2.4-2.4835G(Hz) Power rating:30MW Mic sensitivity: - 58dB 3dB Mic frequency range: 30MHMHz-16KHz Play time:About 13 hours Standby:180 hours Charging time:About 2-3 hours Charging Current:350mA Compatibility:Cellular phone, Bluetooth device; support remote control of play/pause, previous/next track, volume up and volume down Packing list:...