This LED light key chain is made of ABS.The size is 2.4"*1.4".Durable and easy to use.Power supply is solar energy.It is convenient and eco-friendly.Customized logo is acceptable.Great to promote your brand.Carry your keys while keeping a source of light handy. Designed with three bright white LED lights, perfect for providing better visibility after dark or in dim areas. Both eye-catching and functional.