Basics ------ - Click to turn the light on or off. - Hold the button to change brightness. - Release and hold again to change brightness the other way. - Click twice for maximum brightness. Lockout mode ------------ Avoids risk of melting things from accidentally turning on in pocket/purse/etc. - Click 4 times to lock out the light. - Button blinks orange when locked out. - Hold the button to keep the light on without unlocking. - When locked out, click 4 times to unlock. Charging -------- - Charge at room temperature; don't charge when hot or cold. - Works with anything that charges your phone. - Button blinks blue when charging, stays on solid blue when done. - If the light won't stay on or suddenly drops in brightness, it needs charged. It can also charge your phone with a USB C-to-C cable (same plug on both ends). Safety ------ - Don't charge when hot or cold. - Don't leave in direct sunlight. - Try to not leave it in your car (hot/cold temperatures cause the lithium battery to wear out sooner, same as your phone). - The light gets hot at high brightness. Extras ------ - When off, hold the button to turn on at the minimum brightness. - When off, click 3 times to check the battery. Blinks out two digits with a pause, 3.0 is near empty and 4.2 is full. Example: 3 flashes then 4 flashes = 3.4. - When on, click 3 times to change between smoothly fading up/down and changing in discrete steps of brightness. - The button might glow blue when the light is on without charging it. It'll stop glowing after a while, and it's safe to ignore it. (It's a small mistake.)