The earbuds feature Bluetooth V5.0 to give you an unparalleled audio experience with faster and more stable transmission within about 10m. Pick up two bluetooth earbuds or either earbuds after turning on bluetooth and they will automatically connect (after first pairing). No distortion and lag for worry-free music and phone calls.Take it to travel with you, you can enjoy music all day and charge your phone when the phone runs out of battery.Extremely lightweight and ergonomically designed to provide a secure fit while ensuring ear fatigue-free and long-lasting comfort. Whether you're running or jumping, the wireless earphones will stay firmly in your ears, perfect for jogging, yoga, cycling, and more.Bluetooth Version: 5.0Earbuds Battery Capacity: 500MAHCharging Case Battery Capacity: 1200MAHMax Transmission Range: 10mFrequency Band Range: 2.402Ghz-2.480GhzBT Transmitted Power: -3dbInput Voltage: 5vSpeaker Impedance: 32Weight: 170gColor: Gradient Red, Gradient Blue(optional)Size: 79 x 52 x 32mmPackage List:1 x Earbuds2 x Ear Cap1 x Charging Cable1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.