In-Ear Headphones - Universal - Bluetooth Earphone for Xiaomi Bone Conductive Bluetooth 5.0 Chip Waterproof Earphone 68 Hours Battery Life | Bluetooth Earphones (Grey) Highlights Universal Bluetooth Earphone for Xiaomi Bone Conductive Bluetooth 5.0 Chip Waterproof Earphone 68 Hours Battery Life | Bluetooth Headphones (Grey) Bone Conduction Bluetooth Headset Xiaomi Bluetooth 5.0 Chip Headset Sweat Head 6 8 Hours Battery Life | Bluetooth Earphones & Headphones (Grey) User Description: 1. ON/OFF Press and hold POWER key for 3 seconds, you will hear voice prompt "Power", press again for 3 seconds for 3 seconds , the headset turns off and the voice prompt - "Emermute". beep interval 2. Pairing and connecting When the headset is paired with Bluetooth, press the POWER button for 3 seconds to enter Bluetooth pairing mode until you hear the second voice prompt, BEEP interval. then release the power key. The tail light will quickly change flashing red and blue. Please open Bluetooth settings on your phone, select B9", then the headset will connect successfully in a few seconds. Blue light flashes slowly after pairing success 3. Charge: For each subsequent use, press the power button .Hold for 3 seconds.Please raise the power button immediately when the voice prompt "Power", you will hear a voice prompt, the headset will automatically start Bluetooth in seconds.(If you press the power button "More 3 seconds", the headset will enter pairing mode, you will hear the voice prompt ". In this case, your Bluetooth device, and the headset will automatically connect in seconds) 4.Note: Key function operation: Double -click: volume + / volume- three clicks: previous song, next songs Reject call from PWR call Press and hold POWER key for 2 seconds. Replay the last PWR call button double click the power button specification: Charging time: 1-1.5 hours Music time: 6-8 hours Standby time: 240 hours Transmission range: 33 feet The package include: 1 Bluetooth headset