FandyFire makes many flashlight designs. They all are solid and work well. I was looking for something to replace my very old double-A battery pocket flashlight and this was better than expected. It's smaller and brighter. It measures 2.5" x 1" x 0.5". The clip removes (with difficulty - it's tight) if not needed for use in a pocket.The battery charges with a USB-C cable and an LED glows red while charging, turning green when full.With a long press, the double beam lights turn on. Single presses after it's on cycle through high, medium, low, and SOS beams. Another long press turns it off. When turned on again, it will be at the setting left on exit.A double click turns on the side light. I'm not sure why you need White, Red, Green, Blue, and Cyan colors, but you've got a choice.Double clicking when the sidelight is on puts it into Red Pulse mode; the red light fades in and out. At first it looks like it just turned red, but then begins fading out.A single click while the red is pulsing puts it into Red & Blue flash mode. Another single click puts it back into red pulse mode.Double click in pulse or flashing mode brings back the solid white side light.There's a strong magnet on the base which would allow it to be stuck onto a metal car roof in flashing mode as a bit of a warning, or just stuck on something metal to be a fixed light source.The clip is strong and will hold the light on a hat brim or belt.A split key ring is supplied to place through a corner of the light if a key or small knife needed to be attached. The hole in the corner can be used to attach a lanyard or wrist strap that has a thread-like loop on the end.5 stars-