Music BT headphones, sunglasses and glasses, two-in-one use, you can enjoy music without putting in your ears, outdoor riding is very suitable for use. Features: Open directional audio glasses, combining music, phone and glasses. Directional audio technology can accurately project music to a specific area. Whether you are listening to music or making a phone call, only you can hear it without disturbing others, and at the same time, you can get outside sounds. Built-in high-sensitivity microphone and noise reduction technology, you can call the voice assistant directly and talk easily. BT5.0 chip performance, strong, fast response, stability, no delay, compared with BT4.2 improved performance, low power consumption, and achieve long-distance transmission. Get rid of the tradition of using earphones in the ear, and it is not painful to wear for a long time. Specification: Product model: a2 Frames Color: Black Speaker power: 8 ohms, 1 watt * 2 Battery capacity: 80 mAh * 2, rechargeable Standby time: more than 12 hours Charging time: 2 hours Working time: 5-8 hours, depending on the volume Material: ABS Lens: single gray ink lens Package Size: 18.5 * 8 * 6.5cm / 7.28 * 3.15 * 2.56in Package Weight: 149g / 5.26oz Package List: 1 * Music glasses 1 * USB charging cable 1 * glass cloth 1 * Instruction manual (Chinese, English)