How to use it? Main Button(6500K cool white): 1. Lock: rapid click the button four times, the Lipo battery indicator (blue) will flash 3 seconds. 2. Unlock: rapid click the button four times, the AAA battery indicator (green) will flash 2 seconds. 3. Moonlight: Single click, then click to turn off. 4. Switch power source manually: at moonlight mode, rapid triple click. a) from Lipo battery to AAA battery: If succeeded, the Green indicator will come on for 3 seconds, oppositely, the Blue indicator will flash 2 seconds; b) from AAA battery to Lipo battery: If succeeded, the Blue indicator will come on for 3 seconds, oppositely, the Green indicator will flash 2 seconds. 5. Momentary-on: from off, press and hold, release to turn off. 6. Turn on the memorized on constantly: rapid double click, then click to cycle through low-med-high. 7. Strobe: from off, rapid triple click, click to turn off. 8. Turn off: press for 0.5s; turn off will memorize the last used mode. Secondary Button(4000K warm white) 1. Warm white: from off, single click to turn on from low mode, then click again to cycle through low-high, press for 0.5s to turn off, no memory. 2. UV: rapid double click, then press for 0.5s to turn off.