Features:1. Ergonomics design, single exhaust port, comfortable and unique shape is a good choice for COSPLAY and party.2. With a controller, no batteryThe function of the controller is to control the light of the mask, and it has 4 modes: self closing, constant brightness, flash and slow flash.3. It can be bent to adapt to the shape of the product, even can be folded, and has good impact resistance, electroluminescent film is a cold light source, its work is basically no temperature, working temperature is lower than the fluorescent lamp.4. Light uniform, soft: the light did not flicker, will not make the eyes produce tension, fatigue.Specification:Size: 6.7inch x 7.1inchBattery: 2 X AA Battery, Batteries is Not IncludedMaterial: PlasticPackage Included: 1 x Light up Mask