Feature: 1. Bluetooth 5.0 Technology: Adopt Bluetooth 5.0 Technology, suitable for most smart Bluetooth devices. It uses a high-performance Bluetooth 5.0 smart chip to make the connection simple, fast and stable. The connection range is up to 10m. 2. Stereo HD Fidelity: True wireless earbuds Stereo featuring latest BT 5.0 technology and state of the art acoustic components that produce incredible sound quality with deep bass and crystal-clear treble. 3. Comfortable: Ergonomic and lightweight design fits comfortably and snuggly in your ear. Will not feel pain after long time using. 4. 5 colors: 5 colors are optional to meet different preferences. 5. Foldable and Portable: Easy to fold up without taking up too much space. And its lightweight design makes it easy to carry around. 6. Stylish Wireless Headphones: With unique 7 colors LED light on the ear case, which is very cool. Specification: Item Type: Bluetooth Headphone Audio decoding: apt-X, AAC, SBC Speaker unit: 40mm composite film Speaker impedance: 320 Bluetooth distance: 30 feet (10 meters) Wired jack: 3.5mm (needs additional wiring) Frequency loudness: 2400-2485MHz Battery capacity: 350mAh polymer battery Sensitivity: 110dB / mv Charging time: about 2 hours Endurance Time: about 24 hours Distortion THD: