This is a great charger overall, and it's wonderful if you're looking for a charger that specifically can (very!) quickly charge camera batteries of the matching types. It's also able to (very!) quickly charge any USB devices you plug into it, through the USB-C ports on the side of it, which each function as both input and output. It's got a percentage charge on the front for the device's battery plus 4 bars each for the 2 camera batteries, and it works very quickly to charge your camera batteries and/or your USB devices. It's made of sturdy and smooth-feeling plastic that feels very high-quality, and the little LED screen on the front is bright, well-defined, and easy to read. I can fully recommend this if it suits your needs, specifically for charging camera batteries.This charger does have some downsides, however. Its design does mean that's quite large, even larger than you might think given its intended use for charging camera batteries. Additionally, the little flip-up door on top feels oddly cheap, plus it's difficult to open and takes me a good few seconds every time. And then once you've got the camera batteries in it, you'll probably need to turn it upside-down if you want to get the batteries out because the springs aren't all that much to speak of. Those two issues are why I'm giving it 4 stars because overall it is really great, but they did stand out to me.The USB-C input/output slots can take max 5V 3A and 20W, and they can supply 5V 3A and 15W. This is sufficient for fast charging in all the phone and tablet models I can think of, but it obviously won't be able to power a laptop. Each battery charger (on top) can supply max 8.4V and 1A, individually. This is all very fast, and with a total capacity of the internal battery of 3.6V and 12,400 mAh (~44.64 Wh), it can charge a lot depending on what you're charging.This really is quite large, and it is also quite heavy - matching its size. To put it another way, it's shaped and sized like a full-on camera, and it feels about that heavy. This is a big pro for the aesthetics of it, but it makes it quite a big item if you're looking to pack or travel. I can only picture packing this if you truly needs its unique features, specifically the dedicated camera battery charging.Overall, if you need a camera battery charger, this is a great choice - and if you're dealing with a camera worth as much as you are, you'll be able to justify the price. That said, it still could do with those small improvements I mentioned.I only review things that I personally use myself on a regular and continued basis. I always give my full, honest, unbiased and unfiltered opinion on everything I review. I will not hold back or avoid describing any issues I have with a product. I write exactly what I think about things - the good, the bad, the ugly, and the questionable. And, I will update my review if something breaks, stops working as intended, or otherwise doesn't hold up as expected.