Andux Land Black Frame Neon El Wire LED Light Up Shutter Glasses with Standard Controller FGYJ-01 1. Sturdy black frame, non-waterproof, can not bear heavy press. 2. The Light controller takes 2 AAA batteries and has 3 settings: All On, Strobe, and Flash by Sound. 3. The battery pack can clip to anywhere on your upper body, such as waist belt or pocket. 4. The Lighting Glasses can be used on both Indoor & Outdoor Night Shows & Activities. 5. Make yourself Cool and Flashing in group.