POWERFUL AND LONG LASTING High-capacity battery allows you to enjoy your music to the fullest, let the music be with you all the time. The battery capacity is 140mAh and magnetically charged. Charging takes only 1.5 hours. The maximum talk time is up to 6 hours and the maximum music time is up to 6.5 hours. Not just a pair of sunglasses, but a Bluetooth 5.2 speaker that you can take anywhere, providing you with a musical atmosphere anytime, anywhere. SUITABLE FOR VARIOUS OCCASIONS Wearing these glasses can effectively reduce glare and glasses fatigue. It will block harmful rays for you and is suitable for use in different occasions. You can wear it when riding or driving to prevent direct sunlight. Not only do they provide sun protection, but they also play music for those wonderful moments of relaxation. Feel free to wear these sunglasses while enjoying beach bathing, out jogging, skiing or fishing!