The light still works, but I'm not sure how long the battery will last. The size is also adjustable, so I think it can be used for a long time. Even adults can use it if they have a small head. KED black and yellow children's helmet with LED light at the rear for improved safety. - Brand: KED - Color: Black/Yellow - Type: Children's helmet - Features: LED light at the rear - Interior material: Cushioned Thank you for viewing. Shipping costs about 800 yen, so please refrain from price negotiations.