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: 5.0 Earbuds Battery Capacity: 500MAH Charging Case Battery Capacity: 1200MAH Max Transmission Range: 10m Frequency Band Range: 2.402Ghz-2.480Ghz BT Transmitted Power: -3db Input Voltage: 5v Speaker Impedance: 32 Weight: 170g Color: Gradient Red, Gradient Blue(optional) Size: 79 x 52 x 32mm Package List: 1 x Earbuds 2 x Ear Cap 1 x Charging Cable 1 x Manual