Deal alert save big on this K&F CONCEPT BI COLOR VIDEO LIGHT 20$ discount now only 18$ instead of 38 The construction: This device is made of medium to high quality plastics with a nice thickness down to the mold. All buttons feel responsive. The two knobs have a nice click. But show some freezes when you rotate them quickly to select the color temperature. The device is lightweight and extremely portable, thanks to its compact design. There are 2 1/4 standard screw adapters and a cold shoe mount to attach this light to any type of rig. This model also features a small LED screen that indicates modes, battery percentage and color temperature. The LED: There are only 40 LEDs in this light, 20 warm and 20 cool. With a color temperature ranging from 2500 range orange warm to 9900 range blue. You can choose the exact color you need for many different scenarios. It is understandable that this light is not a light cannon. I measured the maximum brightness of about 600 lumens. So don't expect this small flashlight to illuminate a distant subject or a large screen. But it can be used for small fill light, accent light, close hair light, background accent lighting etc. The Effects: Another cool addition is the effects library. There are 15 interesting lighting scenarios accessible via the secondary mode selector buttons: Flash, Fast, TV Screen, Candle, Flame 1.2, Bad Bulb 1.2.3, Flash 1.2.3, Fireworks 1.2.3. They can be a great addition to your arsenal of creative ideas during shoots and music videos. Battery: This device has a built-in 2000mAh battery, which gives you about 2 hours of recording time. This number varies depending on the voltage drop, the ambient temperature and the number of charging times = maximum capacity exhausted. During my real-world testing, I had 1 hour and 30 minutes of maximum brightness in a cold environment. Final Thoughts: While this isn't the brightest battery powered portable light on the market. It offers many different features in a simple and easy-to-use package. With good runtimes and the small size you can take this gem with you on many different shoots and find countless useful and creative ways to use this item.