Leviathan v4 Review— Is this the best mouse release of 2025?
Some mice drop with huge hype. Others show up quietly and still end up owning the year. RAWM Leviathan v4 is that kind of mouse. No big noise around it, yet it’s easily one of the strongest mouse releases of 2025.
I honestly didn’t expect this. And that’s exactly why this review exists.
Scenarios
Testing time: 2 weeks
Hand size: 21 x 12 cm
Grip: relaxed claw grip
Humidity: 55–65%
Skates: stock skates
Mousepads: Artisan Hien Soft, AimPad 1.5, Tenta-X BerryMilk
Games: Battlefield 6, QuakeWorld, Doom Eternal.
Specs and Features
- Shape: Symmetrical design suitable for various grips (palm/claw/fingertip)
- Dimensions: ~126.7 × 63.9 × 40 mm
- Weight: ~55 g
- Skates: Large PTFE skates, rounded, around 0.7 mm thick
- Sensor: PixArt PAW3950
- Polling Rate: Native Dual 8K (8000 Hz)
- DPI Range: ~100–45 000 DPI (software adjustable)
- Max Tracking Speed: ~750 IPS
- Max Acceleration: ~50 G
- Wireless: 2.4 GHz RAWMSPEED 2.0 with ultra-low latency
- Wired: USB-C connection (can be used while charging)
- Included Receiver: 8K dongle (for max polling rate)
- Battery Capacity: ~500 mAh
- Battery Life: Up to ~150 hours in performance mode (according to the brand)
- Switches: TTC Optical (main buttons, ~100 million click lifespan)
- Programmable Buttons: ~6 (including forward/back)
- Scroll Wheel: RayShark optical scroll
- RAWM Hub / Web Driver: Button remapping, DPI steps, macros, polling settings, RGB/custom settings
- Angle Correction Tech: Adjusts sensor calibration for straighter tracking
- Thermo-sensitive coating: Adapts to hand temperature, enhances grip/stability
- Available Colors: Black, White, Blue/Deep Blue
In the Box
- RAWM Leviathan v4
- grip tapes
- 8k dongle
- manual
- USB-C to A cable
Unboxing and First Impressions
Build Quality and Design
RAWM’s build quality is top-notch now; it’s incredible how fast they have progressed with it. When I tested their other mice (and I tested them all so far), the build quality was always above good, but this time looks like they have entered the Premier League in this regard. There’s no rattling, no wobbling, and no side play anywhere — this mouse feels as solid as a tank.
The whole shell is made from very smooth and solid plastic; it feels almost bulky and very dense. When you hold it, you genuinely feel like you’re holding a premium product, almost like the sturdy, reliable build of a ’90s Mercedes. It’s definitely the Zowie/Vaxee level now, much better than any Razer/Logitech. It’s built to last, and you can sense that right away.
And it’s not just the mouse itself; everything from the cable to the receiver to the packaging screams quality. RAWM has really nailed it on making the Leviathan v4, and it feels like a high-end, durable product.
The design of Leviathan is somewhat classical — it’s not one of these wacky or futuristic mice for gamers. It looks pretty modern but still conservative — there’s only one DPI button underneath that sets it apart from the most popular shapes out there, and one LED to signal if the battery is low. However, RAWM added its logo on both sides, plus the RAWM title close to the thumb rest — something I haven’t seen before with them.
Shape and Grip
Some reviewers say that Leviathan v4 is just an exact copy of Razer Viper v3 Pro, and while the dimensions tell the same story, there’s another mouse that feels closer to it than Viper, and it’s Ninjutso Ten. The Leviatha v4 measures 127 mm in length, 64 mm in width, and 40 mm in height, giving it a footprint that feels familiar to some familiar Ninjutsu Ten shapes, but with a few subtle twists. The mid-section is cut in deeper, so the waist has a more pronounced pinch that locks the fingers in tighter. The hump sits a little further toward the center, which shifts how the palm meets the shell and gives more support at the middle of your hand. On the right side, the small ridge that many mice carry has been flattened out, leaving a smoother contour that doesn’t press into the fingers when adjusting grip. The main mouse buttons are also positioned slightly higher.
The mouse is 2mm longer than the Ten, but it can still be operated easily up/down with the movement of your right thumb and fingers, leaving room for some swift vertical micro adjustments (if your hands are large or medium).
These changes make the mouse feel thicker in the hand, feeling more stable and solid, and a bit more centered in profile, while still maintaining the overall dimensions within the standard medium range. However, even though the dimensions of Leviathan are exact as of the Viper V3 Pro, the feel in hand is different due to its different (more matte, less chalky) coating and a different main button profile.
Overall, that is a completely new shape and a new mouse, not to be compared with the Viper V3 Pro. Hand size recommendations? Big and medium hands users will feel at home with almost any grip, for small hands users, I’d suggest a different mouse from the RAWM stable (for example, SH-01 Pro, which is like Razer Viper Mini).
Coating, Skates, and Weight
The matte coating on the Leviathan v4, though a bit of a fingerprint magnet, is fantastic in terms of grip. After a few minutes, once your hand warms up, it really locks in and becomes one of the grippiest surfaces out there. And after swiping it with a wet cloth, it looks brand new. Honestly, it’s probably one of my favorite coatings across all peripheral brands. RAWM absolutely delivers on this front — no question about it.
Skates are really good — I had no urge to even think about replacing them (apart from the glass pads I tested maybe). They are solid, pretty thick, rounded, and medium fast, with a flair of decent control. They performed well on all mousepad surfaces I tested them with; however, I preferred some other skates made from UFE for my glass pads, but that doesn’t take away any merit from them. I would be great to have a spare pair of them in the box, though.
The weight on this very solid and dense mouse is acceptable and can still be deemed as light (not super light anymore, though) — 55 grams on my scale, coming down to 54 grams with some dots. After coming from a G-Wolves mouse, this was hard for me to accept for 2 days, but after that, I felt totally in line with Leviathan’s weight. Sure, it could be a bit lighter, but that would take a toll on its shell density and the battery (500 mAh). The mouse is well balanced; nothing tips in any direction. This is a very stable and solid mouse; 55 grams is an accepted weight for this quality and density. Would I like it to be lighter? Yeah, why not — and we can always swap the battery to a 150–200 mAh unit to cut the weight to 50s, but I would not actually do that — the mouse feels perfect as it is.
Clicks and Buttons
The main switches are TTC Opticals with approx. 100 million click lifespan. They feel outstanding, very snappy, easy to activate, and spam. Their sound profile is also acceptable — not too loud and not metallic, unlike those used by Logitech, for example. They are also implemented amazingly well — no pretravel, no postravel, very tactile, no weird click delay, no double clicking, and zero mushiness, and they rebound really fast. Absolutely one of the best implementations this year, if you ask me.
The side buttons are mechanical, probably Huanos, with a lower pitch and sound profile than the main ones. But they are also good and tactile; there’s only a small amount of pre-travel, but absolutely minimal, so no need to complain.
The scroll wheel has a rubbery/textured feel and is equipped with the 3rd Gen Reasha optical encoder. It has decent steps that aren’t too loud, but the click is a bit too stiff to my liking and could be lighter to press.
All buttons (perhaps except for the scroll wheel in my copy) have great tactility and spammability — they are really satisfying to click, with almost zero pre-travel and no side-to-side wobble. And they have this typical look of RAWM — when you look at the main buttons and the grooves they have, they look like these sides of a Formula 1 racing car, and I love it.
Software and Battery Life
RAWM software has been one of the best ones I’ve had, with only the Rapoo drivers topping it, maybe. It’s clean, fast, works perfectly, easy to navigate, easy to understand, and easy to manage. There’s also the web driver now, which makes it complete. Apart from the regular options that are normal to the 3950 sensor (macros, button remapping, Motion Sync, Angle Snapping, polling rate, and DPI customization), this one features the Gaming Mode, Wireless Connection Optimization, Glass Mode, Click Debounce Time, and Angle Tuning (auto-configured or set manually). That’s a great small set of options, everyone should be satisfied with.
The standout thing here is the Angle Correction. Essentially, you can adjust the sensor to match your actual mouse grip, particularly if you tend to hold it at a slight angle. For Tac FPS players, that’s a big deal — especially if your left-to-right swipes never feel perfectly straight.
Now, about the battery life — RAWM decided to equip this banger with a 500 mAh unit to reduce the time we will spend on recharging. And this battery holds pretty well — with the Gaming Mode on, I was able to game around 60 hours with the 2k polling rate. And that’s satisfactory to me — at 1k and without the gaming mode, you should be able to double it. On the other hand, 8k eats the battery quite fast, and I don’t recommend using it after 2 years of testing. The downtime and battery life will deteriorate quickly; it’s not worth it in my opinion. I play at 2k exclusively nowadays.
One thing to nitpick — the battery indicator shows incorrect data: it tends to round up to 100% when the battery is not fully charged.
Gaming
How was my gaming with the Leviathan v4? Well, this mouse came into my setup directly after I had to put Gwolves Vuk back into the box. And it was hard for me at first because the 20 gr difference was definitely there, and I felt it very much. I was a bit frustrated at first, but after 2 days, I started to adapt to the new shape and weight. And from that moment, the mouse felt amazing to me — it just clicked in every aspect. It gave me stability for horizontal aiming, it gave me confidence in clicks and buttons that perform really well, and it gave my hand the support I needed to be really accurate yet agile. It performed well in both really fast scenarios and more balanced gameplay. I swapped the skates for UFE dots, and it shone on the glass surface as well. The sensor performed beautifully (Pixart 3950 with some RAWM tweaks), and I adapted back to the center position of it in no time. I don’t think you will perform any worse with it, to be honest, it's just that good.
Summary
RAWM might look like a brand that popped up out of nowhere, but people who’ve been paying attention already know them for well-built, well-thought-out gear. Leviathan v4 feels like everything finally clicked here. No gimmicks, no obvious compromises. You put your hand on it, and it just makes sense.
But the most important thing is that… this mouse is for you. Yes, you are reading it right. This is a very versatile shape that is better than GPX Superlight and Viper; it’s like another gold standard in my opinion. It will take me some time to announce something like that again, as I’ve never done it so far, but once again, this mouse is for you. It checks all the marks a great gaming mouse should check, and it adds more: some confidence you really need to step up your game. Just give it enough time to shine, and you will not regret it.
And the blue color is the icing on the cake. I am glad RAWM took my advice and named their mice differently and gave them life with new color options.
Bullet Points
- This is one of the best mouse releases of 2025
- The build quality is amazing
- The mouse feels like a small tank
- specs are absolutely top of the line
- The mouse feels really flawless in games
- great clicks: spammable, with fast rebound, tactile
- 54 grams for this build is really acceptable
- great, symmetrical shape that should work for everyone
- Stiff scroll wheel in my first copy, the second one was much lighter, but still not light
- Skates perform well on all surfaces; however, for glass, I would suggest UFE dots
- The battery indicator displays 100% when charged, even if the real value is lower
- For this price, it’s a steal
- The blue color is mesmerizing
Get this banger mouse from RAWM here
This review is not a paid endorsement. I want to ensure transparency and let you know that I am not receiving any monetary or other compensation for evaluating or discussing this tech product. Certain images might have undergone digital enhancement to improve visual clarity. These adjustments do not alter the true appearance, shape, or physical characteristics of the product.
