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Power supply: 2*AA (not included) Material: PVC+EL wire one size : fits teen and adults lighting colors : red, green , blue ,Black green, orange Features: 1, harmless: no UV, no adverse effects on the human body. 2, the shape of any: according to customer demand for the production of various shapes. 3, no heat: electroluminescent film is a cold light source, the work of the basic no temperature, the 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. 5, good shock resistance: electroluminescent film and other light-emitting devices, it is not easy due to the impact of the outside world and failure.