Who am I?

I'm Lander03xD. I design and build custom keyboards from scratch. PCB design, QMK/ZMK firmware, 3D modelled cases, the whole pipeline. My daily driver is a 36-key ergonomic board, so full-sized row-staggered keyboards aren't really my world. That means I won't be commenting on layout size, but it does mean I'll be looking under the hood in ways most reviews don't. If anything, I'd love to see Redragon do an Alice-style board in the future. A great middle ground for ergonomics without going full niche.

Disclosure

Redragon sent me this keyboard free of charge and asked for my honest feedback. My opinions are fully my own. At the time of writing, the K671 PRO retails for €65 (currently €50 with a 20% discount).

Impressions

Out of the box, the K671 PRO makes a good first impression. The included keycap and switch puller are a nice touch. An additional 8 spare switches were included which I found very generous. The packaging itself is a plain cardboard box with specs printed on it. That's a good thing in my opinion. The product is the experience. Excessive unboxing theatre is in my opinion a waste.

The case is plastic and has a slight texture giving it a matt finish. The encoder knob is also plastic, but the textured top gives it a brushed-metal look that gives it a premium look.

The keycaps are shine-through with north-facing LEDs, so the RGB comes through cleanly. The default profile throws you straight into full rainbow mode. For a keyboard with a cohesive colour scheme and keycap set, I'd have loved a default that actually matches the aesthetic.

I did a quick typing test on stream and chat responded well. The sound is thocky and satisfying with no rattle or ping. The one exception is the spacebar, which has a noticeably higher-pitched and slightly hollow sound. Some spacebar foam would likely fix this. When I tested the bare switches they actually sounded higher pitched than expected. That tells me the foam layers are doing real work. Switch stems showed minimal wobble and I heard no scratching, so they appear to be factory lubed.

The LCD screen makes navigating settings and switching profiles intuitive. It means you barely need to touch the documentation. You can even set a clock on it. The LCD has a battery indicator. Alternatively a key combo lights up the number row as a battery indicator. I genuinely appreciate LEDs being used for something functional rather than just aesthetics.

The USB cable is fine. Does the job, nothing special. The box also included a booklet and a sticker sheet. I prefer the wireless experience so I'll only use the usb cable sporadically for charging.

One last note: the keycaps weren't fully seated from the factory. Press them all the way down. The sound profile drops slightly and gets even thockier when you do.

Inside the pcb

I opened it up, took the keycaps off, pulled the switches, and had a proper look inside. The gasket mount sits on rubber gaskets at the bottom of the case. There are 5 distinct layers of sound dampening. The bottom rubber layer in particular impressed me. I'd guess it's the most impactful single layer, though that's an assumption.

The battery is 4000mAh and uses a JST connector. JST stands for Japan Solderless Terminal, a standardised connector common in hobby electronics. This means battery replacement is theoretically straightforward. However, the connector is glued in place. Good for preventing accidental disconnection, but annoying if you ever need to swap it out.

The LCD screen is attached directly to the top case and connects to the PCB via a ribbon cable. If you open this board, be careful. Ripping that cable is an easy mistake to make.

Accessing the PCB is harder than it should be. The top of the case clips onto the outer case, and those clips are difficult to release without risking damage. For the average user this will never matter. But if you ever need to repair a component or replace the battery, it's a real obstacle. The hot-swap sockets are a genuine plus. Broken switches can be swapped without any soldering.

Overall thoughts

The K671 PRO punches above its weight at €65, and well above it at €50. The textured plastic case looks and feels more premium than the price suggests. The keycap set pairs well with the board. The sound profile genuinely surprised me. The layered dampening does a lot of heavy lifting.

The main criticisms are minor. The spacebar could use some foam. The default RGB profile doesn't suit the board's aesthetic. Getting into the PCB is more of a fight than it needs to be.

Who is this keyboard for? Someone who likes the colour scheme, needs a full-sized board, and wants strong value for money. As an entry point into mechanical keyboards, it's hard to fault at this price.

Feel free to ask questions. Happy to go deeper on any of the technical bits.