To toggle through these 2 programs, wait 5 seconds from ON, when you see it flashes, do fast double-click to the next program. It flashes twice to remind the success. If you keep going double-click quickly, it keeps changing brightness level. Please know that every time you turn it on, the light flashes after 5 seconds. If you don't need to change program, just ignore it.

Program 1：Duty

Moonlight (1 Lm)→Low (100 Lm)→Medium (350 Lm)→High (1200 Lm)→Turbo (2800 Lm)

From a soft 1-lumen glow to a blazing 2800-lumen beam, PROGRAM 1's five brightness levels ensure this flashlight shines perfectly in any situation, whether illuminating a whole street or guiding you to a room's light switch.

Program 2: Tactical

Turbo (2800 Lm)→Strobe (2800 Lm)→Medium (350 Lm)

Program 2 transforms the SC28 into a classic tactical flashlight. Quick to activate, brilliantly bright, and easy to operate, it's your trusted companion on dangerous roads or when cautious of wildlife, ensuring you're always ready for emergencies.