AL1200NP IR Li ion Rechargeable Battery Narrow Beam Infrared Light. The Bigblue AL 1200NP IR delivers great Infrared in 10 degree light beam. The sleek and ultra-compact aluminum body can withstand the most rugged diving situation. It offers output. 4 levels of brightness 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 steps power adjustment lets you choose between four output levels, IV at 100%, III at 50%, II at 25% or I at 10%, extending the burn time and reducing reflections at close range. Replaceable 18650 battery. Lanyard included.