ABS Plastic|Slide the button down for single light at the end|Slide the light up to get full ring of light|Product is off when button is in center position|Includes a total of three LED lights|Utilizes button cell batteries (inserted and separated by pull tab)|Use the key ring for your keys or attach to your bag, purse or backpack|Push ring in to attach to your bag or to attach key ring|A great promotional item for realtors, trade show giveaways and car dealers