Product Specifications: Two choices, please choose according to your needs1) 1. Bluetooth Version: V5.0 2. Call Time: About 6-8 Hours 3. Music Time: About 6-8Hours 4. Charging Time: About 1~2 hours 5. Standby time: About 90 days 6. Transmission Range: 10m/393.7inch 7. One function button for on/off, song switch, language change, receive call (Only for One Piece, Not a Pair, Wear the left and right ears at will) 2) 1. Bluetooth Version: V5.0 2. Call Time: About 18-20 Hours 3. Music Time: About 18-20Hours 4. Charging Time: About 1~2 hours 5. Standby time: About 90 days 6. Transmission Range: 10m/393.7inch 7. One function button for on/off, song switch, language change, receive call (Only for One Piece, Not a Pair, Wear the left and right ears at will)Key Features:1. High-fidelity sound quality, Wireless songs enjoy 2. Allows you to conveniently answer calls while driving 3. Long working time after full charge without external power 4. Deep DPS-noise reduction microphone ensures clear call qualityPackage Includes: 1pcs * Bluetooth Wireless Earphone 1pcs * USB Charging Cable 1pcs * English and Chinese User ManualFeature1: Bluetooth Headset Bluetooth 4.1 Wireless Earphones Sport Earpieces Feature2: For Audifonos bluetooth Inalambrico Sport Earpiece Feature3: For Auriculares bluetooth Inalambrico For Auricular blueto Feature4: YX01 Wireless Headphones Bluetooth Wireless Earbuds Feature5: For Audifono bluetooth Inalambrico Feature6: Wireless Ear piece Ear buds Bluetooth Headset Earbuds Feature7: Invisible Earbuds Bluetooth Handsfree Feature8: Earphone Bluetooth Earbuds Wireless Ear Buds Super Ba Feature9: Bluetooth Earpiece Bluetooth Headphone Bluetooth Handsfree Support1: For Huawei For xiaomi For Samsung For Sony All Phones Support2: Fone De Ouvido Bluetooth Wholesale and Retail Color: White,Black,Rose Gold,Gold,Silver Package: Auricular Bluetooth Auriculars With Opp Bag