Olight S20-L2 550 Lumen Compact EDC LED Flashlight - Use 2x CR123A or 1x 18650 - Including 2xCR123A Batteries & Bonus Keychain Flashlight Latest Upgrade from the Reknown T20 and S20 models: 550 Lumens with CREE XM-L2 LED Three light output level plus strobe mode with mode memorization. Two-direction invertible pocket clip; Compatible with 2x CR123A or 1x 18650 battery Include two CR123A Batteries and a bonus 25 lumen bonus Keychain flashlight