evo.com | Black Diamond Flashlights > The Black Diamond Ion Keychain Light clips to your car keys using the included BD carabiner so you can have light on the go, instantly. Sometimes it's hard to find things in the dark, but if you followed the phone-keys-wallet ritual, now you'll at least have illumination, too. Dim and Strobe Mode Emits 40 Lumens on Max Setting Runs on Two Coin-cell Batteries (CR2032 Included) | Black Diamond Ion Keychain Light 2022 in Blue