Feature 100% brand new and high quality It can be used for the maintenance of bars, parties and night clubs. Telescopic belt adjusts the comfort of wearing elastic The battery is installed inside the mask and has a capacity All plastic packaging protects the battery motherboard, safe and friendly, luminous and not hot. Applicable to many occasions, such as: concert scenes, jumping discs and bars. You can spray disinfectant to wipe gently. Specifications: Color: as the picture shows Material: fiber optic cloth + LED Number of lamp beads: 1 Life: 6~8 hours Mode: button, colorful lights size: 15cmx21cmx3mm Package included: 5pcs x mask(Bring a button battery) Notes: 1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors. 2. Due to the screen difference, the color may be a little different from what you expect, please allow it.