<p>Wireless Bluetooth 5.0 Sunglasses, open ear design. You can easily listen to music and you also can hear the soun around, protect your safety when you are running cycling etcs. Not hurt your ear drum even after a long-time wear.</p> <p>Sophisticated polarized lenses provide effective eye protection from UV rays, and the classic round design complements all face shapes for a blend of both style and functionality.</p> <p>Buttons allow you to adjust volume, skip tracks, play/pause, repeat, answer, reject and end calls. The sunglasses will automatically connect if your paired smartphone is within range.</p> <p>Two pairs of sunglasses can also be interconnected (and paired to a single phone or similar device). Phone calls and music can then be streamed to both pairs of glasses.</p> <p></p> <p>Product Specs:</p> <p>Bluetooth specification: 5.0</p> <p>Frequency range: 2.402 – 2.480GHz</p> <p>Transmission distance: 10m</p> <p>Battery life: up to 4hrs (music), or up to 5hrs (phone calls)</p> <p>Battery capacity: 3.7v/180mah</p> <p>Charge voltage: DC5V/500mA</p> <p>Charge time: 2-3hrs</p> <p>Earphone power: 5w</p> <p>Receiving sensitivity: -40dbm</p> <p>Audio range: 20hz-20Khz</p> <p></p> <p>Package includes:</p> <p>1 * Bluetooth Sunglasses</p> <p>1 * Stereo Headset/Earphones</p> <p>1 * USB Charge Cable</p> <p>1 * Hard Case</p> <p>1 * Glasses bag</p> <p>1 * User manual</p>