The Built-in lithium battery delivers 6 Hours of Music time. The 48 Hours of standby time will satisfy your daily needs. The 52mm high-fidelity speaker delivers crystal clear treble, powerful deep bass, and immersive 3D special audio. Bluetooth 5.1 technology for instant connection, stable low-latency transmission, high anti-interface capability, and auto reconnection. Choose a favorite light effect and color to go with your music at night. The built-in HD microphone makes your call hand-free and crystal clear like talking face to face. It can switch freely between TWS interconnection, TF Card, BT modes, etc, and is suitable for various occasions. It can be fully charged in just 1.5 hours with the included Type-C charging cable. 𝟕 𝐝𝐚𝐲𝐬 𝐨𝐟 𝐫𝐞𝐩𝐥𝐚𝐜𝐞𝐦𝐞𝐧𝐭 𝐰𝐚𝐫𝐫𝐚𝐧𝐭𝐲.