• Rechargeable battery offering several hours of listening in wireless mode, or unlimited listening in wired mode with the included audio cable. • Lightweight, durable, and foldable design, easy to carry for school, travel, or leisure at home. • Adjustable and comfortable for everyone: whether for kids, teens, or adults, it fits all head sizes. • Specification: Battery Type: Lithium 600mAh • Number of batteries: 1 • Battery included: Yes • Power Supply: Rechargeable by USB-C (included) • Compatible with all Bluetooth devices or those with a 3.5mm audio jack output, such as smartphones, tablets, and video players. • Enjoy your music wirelessly via Bluetooth5.0 (range up to 10m) or plug it in via the included detachable aux cable. • Built-in microphone, with play/pause buttons, mode, and volume control for easy music control and answering phone calls. • 12 Months Local Manufacturer Warranty Store in cool and dry place. China