Item Type: LED Glasses_x000D_ Material: Acrylic_x000D_ Battery Type: Lithium Battery ( Shipped with Built in Battery)_x000D_ Battery Capacity: 210mAh_x000D_ Size: Approx. 16x16x5cm / 6.3x6.3x2.0in 1LED LIGHT BEADS: Light up glasses are made of premium LED light beads with long life and good battery life. Suitable for Christmas, Halloween, birthday, children's day, concert scene, carnival, etc. 2USB CHARGING: LED glasses are charged using a USB connection cable (included) with a built in rechargeable battery that can be used for 3?4 hours on a single charge. You can charge it through your phone, computer or other USB sockets that can be charged. 3EASY TO OPERATE: LED cosplay goggles have only one control button (located on the left side of the glasses near the ear), which can be controlled by long and short presses to switch the glasses on and off and the light mode. 4FOUR FLASHING MODES: LED light up glasses have four flashing modes: single color, slow, fast and fade. Wearing these glasses, you will become the most eye catching focus of the audience. 5COMFORTABLE MATERIAL: LED visor rave glasses are made of premium acrylic material, which is transparent, scratch proof and break proof. The same wearing experience as ordinary glasses, long time wearing will not hurt your eyes.1 x LEDLightUpGlasses 1 x Charging Cable 2 x Alcohol Paper All data are measured manually, and there are certain errors in the measurement results.