Key Technical FeaturesBattery & Playtime: Features a bold marketing claim of up to 500 hours of usage time. It includes a built-in LED screen on the control pod that serves as a visual power display to monitor remaining battery life.Play Modes: Supports both standard wireless Bluetooth connection and standalone TF memory card playback, allowing you to play music directly from a card without a smartphone.Design & Ergonomics: Utilizes an in-ear shape with a humanized magnet attraction design that keeps the ear tips snapped together around your neck when they are not in use.