Foldable and space saving design for easy carry and storage. Colorful gradient lights provide a visually appealing effect during use. Built in microphone reduces ambient noise for clearer calls and enables hands calling. Soft breathable earmuffs fit snugly for comfortable long wear without sacrificing noise isolation. Bluetooth 5.0 for broad compatibility with devices such as mobile phones and tablets, with a reliable up to 10 m effective wireless range. Long lasting battery life: up to 10 hours of talk time, up to 15 hours of music playback, up to 180 hours of standby, and a full charge in about 2 hours. Three connection modes for versatile use: Bluetooth wireless, wired via AUX, or TF card playback. The headphones include an AUX plug for wired connections and an AUX audio cable is included. 23 use scenarios Daily commute and travel: use Bluetooth to connect to a phone or tablet for hands calls and music on the move; foldable design fits in bags easily. Remote work or online learning: clear calls with the built in microphone and comfortable all day wear; switch to wired or TF card mode if needed for stability or offline listening. Home, gym, or outdoor activities: reliable Bluetooth connection with up to 10 m range, soft earmuffs for comfort during workouts, or use TF card mode for offline music when wireless isn't preferred.