The Bigblue RGB White II LED delivers great luminosity 4 - Color in 85 degree light beam. The sleek and ultra-compact aluminum body can withstand the most rugged diving situation. It offers 6,500K sun white light output. 4 Colors - White, Red, Blue, Green and SOS controlled by a reliable push button with battery indicator which can be one hand operation. The rechargeable 18650 battery pack comes with a smart charger, enabling you to quick-charge the battery pack in 2-3 hours. The 4 color adjustment lets you choose between four color - white, red, blue or green . Replaceable 18650 battery. Lanyard included.