Cat Eye Bicycle Light Headlight Color: White Brand: Cat Eye Material: Resin Power Source: 2 x AA batteries (newly replaced) Mounting Type: Handlebar mount Product Dimensions: 8.9 cm length x 2.6 cm width x 3.6 cm height Purchased 9 years ago, but I personally found the light output insufficient, so it's practically unused. Used only 2 or 3 times. There's some fading due to being left unused. Power, light emission, and flashing have been confirmed. There's a button on the back to switch between light emission and flashing. To turn it off, long-press the button. No instruction manual or box. *Instruction manuals are available for download. I think it's perfectly adequate for everyday use. Thank you for looking. #BicycleHeadlight #CAT EYE