AL1300 Strobe Li ion Rechargeable Battery LED Strobe Light. The Bigblue AL 1300 Strobe LED delivers great luminosity at 1300 lumens in 270 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. On/ Off 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. Replaceable 18650 battery. Lanyard included.