[Passive] If you use a webcam, and you care that your image is sufficiently illuminated for your viewers to see, then you really should consider this item. Its on-off switch on the back also controls its brightness (K) that you prefer for your viewed image. It can stand on your desk or table, or be suspended from a boom mount.
To power it, I recommend the 12v Fujia Appliance AC Power Adapter.

[Passive] The reviews on photo websites promised a great light, and they were right. Easy to use, nice color range, crank it up all the way and it's so bright you'll need shades. After I put the three parts in the box together wrong a couple times (it was four times), I had to resort to the instructions... Then it was easy. I like this light so much I thinking about getting another one.

[4000] good item. there is no any battery and charger . you have buy it

[LED] I have three of these lights, and it works great for me. You must be careful because its materials are delicate.

[110°] Best bang for your buck

[40 W ] Several of the low STAR reviews were do to the EXTREME COST of the battery / power supply....


Here is the simple Answer: https://www.bhphotovideo.com/c/product/1266552-REG/dracast_bk_1xnpf2200_1x_np_f_2200mah_battery.html/pageID/accessory

[50,000 Hours] I used this light for a tv program and it performed well. The ability to change the color temperture is also an asset.

[110°] I wasted a day researching LED lights and ended with these. I was going to buy the YN600's but opted for the YN900's for the extra lumens that will come in handy. CRI is excellent, they look very good and I think we're going to see Yongnuo challenge a lot of established brand names. Build quality is great and the wireless connectivity for adjusting color and brightness with the remote, app, or main unit is incredible. Multiple light setups take seconds to setup and light right. Only gripe is not having the A/C Adapters included, and Yongnuo really needs to build a proper American ENGLISH website and polish their apps by removing Asian characters. Be sure to buy ball heads for your light stands if you want to angle these lights.

[3200 to 5500K] works great no problems. price is real good. just wish the batteries came with it. just same it does what its suppose to do.

[40 W ] If you have a lot of cash burning a hole in your pocket, then by all means pick up the Arri Skypanel S60-C, Litepanels Gemini, or Digital Sputnik DS-1. If like me, you're on a budget, then you owe it to yourself to pick up a couple of these LED panels. I did a review of the YN600's little brother, the YN360 wand, so check that out, as these lights provide essentially the same outcome, with similar albeit slightly nuanced controls - with one important exception. Since the YN600 RGB and 3200K/5500K circuits are powered separately, you can run them simultaneously. Meaning you can reduce the color saturation on these panels, by bringing in touch of daylight to suit your taste. Which, in turn, means you can use a pair of these as creative primary lights (e.g. tungsten key, teal fill, etc.) without needing gels. I recommend you pick up a couple YN360's while you're at it, to splash some color on your backgrounds. You won't regret it. Now you can paint your scenes with color like the big dogs, but at a fraction of the cost of the aforementioned Hollywood heavyweights.