Halo SL Light W/ Red Brake Light with Battery & Charger is an innovative lighting system consisting of a halo light with a 50 feet spotlight, which guarantees a visibility range of up to 350º in all directions over a quarter mile. It has battery life indicator which is approximately 121 hours. This halo light with rear "brake light" - clearly indicates the direction the user is facing with twelve colored LEDs on the rear. Plus, it's wireless and has a battery and charger included and is water resistant, meaning it can be submerged up to 1 meter for 30 minutes, making it perfect for flood lighting.