P.I.D. - Personal Illumination Device with easy clip on carabiner. Attach to your back pack, bike, key chain, jacket, purse dog collar, dog leash - stay visible. 8 Programmable color options-3 modes of operation include - steady on, flash and strobe. Long lasting can stay on for days. USB Rechargeable (cable included) - Logos imprinted on device. 2" diameter size. Key Attributes: Visible at night up to 200 yards, durable, Replaceable Battery Bright Light Easy to Connect Replaceable Battery Logo'd or Personalized Durable Visual up to 200 yards Easily Attaches with Durable Carabiner CUSTOM Designs Available