Kailh BOX Jellyfish PRO Mengling — Full Transparent RGB Linear | IP56 · 100M Cycles
$0.60
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Kailh BOX Jellyfish PRO Mengling — Full Transparent RGB Linear | IP56 · 100M Cycles
$0.60
Kailh Premium Esports Linear
Kailh BOX Jellyfish Pro (Linear)
The Ultimate Symphony of 100% Crystal Transparency and 1.3mm Lightning-Fast Actuation.
Are you tired of sluggish response times costing you the game? Or frustrated by opaque switch housings that swallow up your expensive RGB backlighting? Kailh introduces the peak evolution of the Jellyfish series—the "Kailh BOX Jellyfish Pro Linear."
Designed for hardcore esports and RGB enthusiasts, it merges 100% full-PC transparent aesthetics with an ice-blue stem for a mesmerizing, jellyfish-like glow. With an aggressive 1.3mm rapid actuation and a feather-light 40gf force, it not only makes your RGB shine like daylight but also grants you the millisecond advantage in intense competitive play. Butter-smooth, instantaneous, and fatigue-free.
+80%
RGB Brightness
1.3mm
Rapid Actuation
100M
Lifespan Cycles
IP56
Dust & Water Proof
Core Advantages: The Ultimate RGB & Esports Companion
We know you love the fluidity of linears, crave esports speed, and demand perfect RGB presentation. The Jellyfish Pro Linear is built to give you the best of all three worlds.
The Problem: Dim & Muted RGB
Standard switch housings swallow up LED light or alter the color temperature, making your keyboard lighting look dull, patchy, and uneven with noticeable dark zones.
The Problem: Sluggish Response
Standard 2.0mm actuation feels too slow in fast-paced FPS/MOBA games, while traditional "speed switches" often have heavy springs that quickly fatigue your fingers.
The Problem: Dust & Scratchiness
Open stems invite dust and crumbs, causing keys to jam. Furthermore, a lack of factory lubrication results in an annoying, dry plastic friction sound.
✨ Kailh BOX Jellyfish Pro Linear: The ultimate solution offering 100% full-PC transparency, a 1.3mm esports rapid trigger, and a legendary 100M cycle BOX sealed structure.
Say Goodbye to Dim Lighting
100% Crystal-Clear PC Elevates RGB by 80%
Traditional Issue
Standard opaque or frosted housings swallow up LED light or alter the color temperature, leaving your premium keyboard lighting looking dull and compromised.
The Kailh Advantage
The top housing, bottom housing, and stem are crafted entirely from high-transparency Polycarbonate (PC), complemented by an ice-blue stem, enabling lossless light transmission.
The Benefit
Turn your keyboard into a blindingly beautiful centerpiece. The fully transparent design allows every beam of RGB light to diffuse evenly. Paired with clear or side-lit keycaps, your board will shine like pure jewelry, boosting brightness by 80% and eliminating dark zones.
Say Goodbye to Sluggish Delays
1.3mm Rapid Actuation & 40gf Feather Flow
Traditional Issue
A standard 2.0mm pre-travel is simply too slow for high-stakes esports. Conversely, traditional "speed" switches often utilize heavy springs that exhaust your fingers.
The Kailh Advantage
Meticulously tuned with an aggressive 1.3mm ultra-short actuation point—making it 35% faster than standard switches—while maintaining a highly comfortable 40gf feather-light pressure.
The Benefit
Action at the speed of thought. Gain the absolute winning edge in FPS and MOBA titles where milliseconds matter. The micro-movements register almost instantly, while the 40g weight ensures your fingers remain entirely fatigue-free even during 8-hour marathon gaming sessions.
Say Goodbye to Dust & Decay
BOX Sealed Safety & 100M Cycle Durability
Traditional Issue
Open stems easily invite dust and crumbs into the contact leaf, causing the switch to jam. A lack of factory lube results in a dry, scratchy feel.
The Kailh Advantage
Equipped with Kailh's patented BOX sealed-chamber technology (IP56 dust/water resistance). Fully precision factory-lubed on rails and springs, boasting a 100-million keystroke lifespan.
The Benefit
Even in harsh conditions, the switch feels brand new for years. The sealed structure blocks debris, sparing you the hassle of manual lubing. This is a truly hardcore switch built to outlast your keyboard, delivering buttery smoothness from day one to year five.
Feature Comparison: The Jellyfish Pro Upgrade
| Features | Standard Linear Switch | ✨ BOX Jellyfish Pro (Linear) |
|---|---|---|
| Actuation Distance | 1.8 – 2.2 mm (Standard) | 1.3 mm — 35% Faster esports response |
| Actuation Force | 45 – 60 gf (Can be heavy) | 40 ± 10 gf — Feather-light, fatigue-free |
| Housing Optics | Frosted / Opaque | 100% Fully Transparent PC — +80% RGB Brightness |
| Protection | Open stem, gathers dust | BOX Structure — IP56 Water & Dust Proof |
| Lifespan | ~ 50 Million Cycles | Certified 100 Million Cycles (100M) |
| Lubrication | Usually dry and scratchy | Precision factory lubed — Buttery out of the box |
Technical Specifications
Hardcore data for keyboard enthusiasts.
⚡Actuation
1.3 mm
🪶Force
40 gf
💎Material
100% Full PC
🛡️Lifespan
100M Cycles
| Product Name | Kailh BOX Jellyfish Pro (Linear Edition) |
|---|---|
| Switch Type | Rapid Trigger Linear Switch (Smooth, straight downstroke) |
| Protection Tech | BOX Sealed Chamber (IP56 Waterproof & Dustproof) |
| Housing Material | 100% High-Transparency Polycarbonate (PC) |
| Stem Material | Ice-Blue High-Transparency Polycarbonate (PC) |
| Actuation Force | 40 ± 10 gf (Feather-light feel) |
| Pre-Travel (Actuation) | 1.30 (+0.4) mm (Esports-grade rapid response) |
| Total Travel | 3.3 ± 0.3 mm (Compact and fast) |
| Spring Specs | 15.2 mm Single-Stage Spring |
| Internal Contacts | Premium Metal Leaves (100M Lifespan, Anti-Oxidation) |
| Lubrication | Premium Factory Pre-lubed (Rails, Spring, Contacts) |
| Pin Configuration | 5-Pin (PCB Mount stability; can clip pins to fit 3-pin boards) |
Customer Reviews
★★★★★
"The ultimate dream switch for RGB lovers!"
"The fully transparent housing paired with the ice-blue stem makes my clear keycaps look stunning! RGB brightness literally doubled. The light flows like a jellyfish on my desk. Unmatched aesthetics."
— @KeycapLover, Custom Keeb Hobbyist
★★★★★
"1.3mm actuation is a CS2 game-changer."
"Switching to the Jellyfish Pro Linear drastically improved my counter-strafing in CS2. The 1.3mm travel is lightning fast, zero delay. 40g force is just right—I can game all day without hand fatigue."
— @FPS_player_Leo, Hardcore FPS Gamer
★★★★★
"Dust and spill proof is a lifesaver."
"As a remote worker who drinks coffee at my desk, the BOX structure is a godsend. Spilled a bit of water once, wiped it off, and kept going without a hitch. Quiet, incredibly smooth, and durable. 100% recommend."
— @RemoteWorker, WFH Professional
Premium Quality, Official Support
Free Shipping Over $80
Global stock, dispatched within 24 hours via lightning logistics.30-Day Risk-Free Trial
Not a fan of the feel? Return them within 30 days. Zero stress, zero risk.1-Year Official Warranty
Industrial-grade durability certified for 100 million strokes with laboratory backing.Frequently Asked Questions
Absolutely! While the 1.3mm travel is significantly faster than the traditional 2.0mm and is tuned for esports, paired with the gentle 40gf pressure, it performs exceptionally well for daily typing. It makes keystrokes feel incredibly light and effortless, effectively reducing finger fatigue during long typing sessions. Once you adapt to it, you'll love the "flowing" sensation.
The improvement is massive. Standard frosted or opaque housings absorb and scatter light, whereas the Jellyfish Pro's optical-grade PC material achieves nearly 100% light transmittance. Combined with the ice-blue stem, RGB lighting disperses freely and evenly in all directions, boosting perceived brightness by over 80% and delivering purer colors.
No. The Jellyfish Pro switches are precision-lubricated at the factory on high-friction points like the stem rails and springs using Kailh's professional automated equipment. You can install them right out of the box to enjoy a buttery-smooth glide, completely free of spring ping or scratchiness.
Yes. The BOX design completely seals the delicate metal leaves and actuation contacts inside a separate chamber. This IP56-rated protection effectively stops dust, debris, and even light splashes of water from interfering with the switch's operation, which is why it boasts a legendary 100-million keystroke lifespan with uncompromised feel.
Yes! The two extra plastic side pins are for added stability on plateless builds. If your PCB only has 3 holes, you can simply use a pair of nail clippers or flush cutters to snip the two extra plastic pins off flush with the base. It will then fit perfectly and function without any loss in performance.