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Kailh Hush Deep Sea Pro — BOX Silent Switch for Office | Quiet · Dustproof · 80M Cycles

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"Silent performance that lasts." The Hush Deep Sea Pro safeguards its silencing effect with a patented dustproof BOX structure, ensuring your keyboard stays just as quiet and smooth from day one to the 80-millionth click. In a bustling office, no one will even notice you're typing—not today, and not a year from now.

Kailh Hush Deep Sea pro Switch box silent switches islet switches
Kailh Hush Deep Sea Pro — BOX Silent Switch for Office | Quiet · Dustproof · 80M Cycles
$0.58
Kailh BOX Deep Sea Hush Pro - Ultimate Abyss Silence & 100M Cycle Durability
Kailh Silent Series Performance Beast

BOX Deep Sea Hush Pro

The Ultimate Symphony of Abyss-Level Silence and 100M-Cycle Industrial Prowess.

Are you still distracted by the loud "clack" of mechanical keys? Or frustrated by budget silent switches that feel like "stepping in mud"—mushy and sluggish? Kailh proudly introduces the silent flagship of the BOX lineup—the "Deep Sea Hush Pro."

Engineered for professionals who demand a "zero-interference" focus and gamers who crave extreme smoothness. It innovatively combines upgraded high-polymer dampeners with the legendary BOX sealed structure to aggressively suppress noise below 35dB. Paired with a golden 45gf actuation, an independent light guide, and a staggering 100-million cycle lifespan, it delivers a pure, butter-smooth typing experience that feels like sinking into the deep sea.

🤫 ≤35dB Abyss Silence ☁️ Butter-Smooth Linear 🛡️ 100M Cycles Lifespan 📦 BOX Sealed Structure
≤35dB
Noise Level
45gf
Actuation Force
100M
Durability
IP56
Protection Grade

Core Advantages: Reshaping Your Silent Input Perception

We know you love the fluidity of linears but demand absolute silence. The Deep Sea Pro is built to balance "zero noise" with "mechanical integrity."

The Problem: Loud & Disruptive

Standard mechanical switches clack loudly, interrupting focus. Typical silent switches often have incomplete noise cancellation, leaving scratchy friction sounds behind.

The Problem: Mushy & Sticky

To mask sound, many switches use soft pads that make bottoming-out feel like "stepping in mud," leading to a sluggish rebound and significant finger fatigue.

The Problem: Dim & Unreliable

Standard opaque housings block your RGB lighting, while ordinary housings allow dust to enter, leading to failure or annoying double-clicks over time.

✨ Kailh BOX Deep Sea Hush Pro: The ultimate solution offering ≤35dB polymer silence, 45gf butter-smooth flow, and a legendary 100M cycle BOX sealed structure.
New-Gen Polymer Dampeners for ≤35dB Silence

Say Goodbye to Bothersome Clack
≤35dB Abyss Silence via Precision Dampening

Traditional Issue

Standard mechanical switches emit sharp clacks that disrupt thought flow. Typical budget silent switches suffer from residual friction noise and incomplete dampening.

The Deep Sea Pro Advantage

Features a newly designed dual-silicone silencing architecture, including thickened sidewall dampeners and specialized high-polymer buffer pads for full-travel coverage.

The Benefit

Make your keyboard "invisible" to ears. This dual-direction design absorbs over 95% of physical impact noise. Even in a library or bedroom at night, you hear only a faint, pure "thud" (≤35dB), restoring total peace.

45gf Golden Pressure & 19.5mm Long Spring

Say Goodbye to Mushy Bottom-Outs
Snappy 19.5mm Spring & Buttery Flow

Traditional Issue

Most silent switches compromise by feeling soft and vague, like "stepping in mud." The weak rebound ruins the typing rhythm and leads to finger fatigue.

The Deep Sea Pro Advantage

Meticulously tuned with a 45gf golden actuation force, paired with an automated precision factory lube and an upgraded 19.5mm extended snappy spring.

The Benefit

Every keystroke is as smooth as slicing through butter. Precise lubrication eliminates all scratchiness, while the long spring provides strong initial support and a snappy return, completely banishing the "muddy" feel.

BOX Sealed Structure & Independent Light Guide

Say Goodbye to Dim RGB & Decay
BOX Sealed Safety & 100M Cycle Durability

Traditional Issue

Solid switch housings block RGB light, and standard housings allow dust to enter, leading to premature failure or double-click issues during long-term use.

The Deep Sea Pro Advantage

Features an independent high-transparency Light Guide Pillar to focus RGB light, alongside the signature BOX sealed-chamber technology for core components.

The Benefit

A switch that lasts a lifetime. The BOX structure provides IP56-rated water and dust resistance. The Light Guide Pillar boosts RGB brightness by over 40%, ensuring your minimalist desk setup can coexist with vibrant lighting and a certified 100-million cycle life.

Feature Comparison: The Silent Endgame

Features Standard Silent Linear Switch ✨ BOX Deep Sea Hush Pro
Noise Level 38 - 45 dB (Audible friction) ≤ 35 dB — Whisper-quiet abyss silence
Dampening System Single-layer pads Next-Gen Polymer — Bi-directional reduction
Bottom-out Feel Often soft, mushy, and sticky Crisp & solid, snappy rebound, zero mush
RGB Brightness Opaque or frosted, dark spots Independent Light Guide — +40% brighter
Lifespan ~ 50 Million Cycles Certified 100 Million Cycles (100M)
Protection Basic dust protection BOX Structure — IP56 Water & Dust Proof

Technical Specifications

Hardcore data for keyboard enthusiasts.

🤫Noise Level

≤ 35 dB

🍦Stem

PA12 Self-Lubed

🪶Force

45 gf

🛡️Lifespan

100M Cycles

Product Name Kailh BOX Deep Sea Hush Pro (Silent Linear)
Switch Type Silent Linear Mechanical Switch
Silencing Structure Upgraded Polymer Buffer Pads (Bi-directional absorption)
Protection Tech BOX Sealed Chamber (IP56 Waterproof & Dustproof)
Housing Material Full-Clear PC (Top) + Deep Sea Blue Nylon (Base)
Stem Material PA12 (Naturally self-lubricating properties)
Actuation Force 45 ± 10 gf
Pre-Travel 1.8 ± 0.4 mm (Lightning-fast response)
Total Travel 3.6 ± 0.4 mm (Deep and solid)
Internal Contacts Anti-Oxidative Gold (Certified 100M Lifespan)
Lubrication Premium Factory Pre-lubed (Rails, Spring, Leaves)
Pin Configuration 3-Pin (Universal hot-swap socket compatibility)

Customer Reviews

★★★★★

"The HIFI endgame of silent switches!"

"The sound is unbelievable. It's a deep, solid 'thud' that I've only ever heard on expensive custom hand-lubed linears, but it's dead silent. The 1.8mm pre-travel makes gaming feel zero-latency too."

— @DeepSeaTyper, Custom Keeb Hobbyist
★★★★★

"Finally, no more typing embarrassment at night!"

"I code all night and my family never hears a thing. The factory lube is perfect—absolutely no spring ping. The 45g pressure keeps my fingers fatigue-free even after a 10-hour sprint."

— @SilentDev, Senior Software Engineer
★★★★★

"Graduation for both aesthetics and durability."

"The clear PC top combined with the light guide is stunning. The smoothness of the PA12 stem is truly top-tier. Knowing it's certified for 100 million cycles makes this a forever-switch."

— @RGB_Quiet, Tech Reviewer

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

It features an advanced high-polymer dampening architecture with noise levels tested below 35dB. This is roughly equivalent to a soft whisper. In a typical office, colleagues sitting right next to you will barely hear a thing, making it the perfect choice for noise-sensitive shared spaces.
Absolutely not. Kailh has optimized the density of the dampening pads and paired them with a 19.5mm long recoil spring. Although the clack is gone, the bottom-out remains crisp and solid (non-mushy). It maintains excellent mechanical integrity and a snappy typing rhythm.
No. The Deep Sea Pro series is precision-lubricated at the factory on friction points like the stem rails and springs using professional automated equipment. They reach a peak buttery state straight out of the box, ready to be installed immediately.
Yes! Deep Sea Pro uses a standard 3-pin design and is compatible with almost all MX-style hot-swap mechanical keyboards on the market (including brands like Lofree, IQUNIX, and NuPhy). As long as your keyboard supports standard Cherry-cross style stems, it will fit perfectly.
Significantly. Ordinary switch housings often block bottom-mounted LED light. The independent Light Guide Pillar acts like a fiber optic channel, focusing and diffusing the light directly to the keycap, boosting overall RGB brightness by over 40% while ensuring zero dark zones.
  • 5 stars: 30 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
b
brewand s.

I ordered the Istet switches because I'm tired of the noise my Glorious GMMK keyboard is making (Gateron brown switches, ABS keycaps). It was so loud and had a ping and rattle at the same time (the only upside is that it was soft to type on). I installed the Kailh Islet switches and the keyboard instantly sounded better, deeper, plus the switches felt more solid too—actually maybe too solid for my liking because I got used to softer switches. But you can tell they're really well made by the look and feel and performance.

N
Neha Huel

Well received.

L
Leopold Sauer

I put it in a 110 plastic round box, so it arrives well without a few bangles. I didn't count the number of them, 110 things must have come well. There is a sense of division and a little square. It's a funny switch.

F
Freida Raynor

I came here, but not bad.

D
Dariana Pfeffer

I ordered on June 28 and received it on July 10. It's in the tongs, so it's good. 110 fit and came well without bad.

F
Florencio Johnson

Excellent switches, not as quiet as outemu switches, but in comparison with them, pressing is much clearer, without softness, stem does not play at all.
The switches are easy to clean from factory lubrication, the guides are right on the top haussing.
If you are tired of the silence-the rubber damper on the base can be removed without any problems, a distinct pressure sound will appear, but a muffled return sound will remain (you can easily pull out the dampers on the top House, but then the switch begins to "fail", apparently not enough rod length).
Of the minuses-The spring is thin and at the same time long, on some switches it can rustle, but the lubricant seems to help.

M
Marilyne Murray

It took a week with accuracy. It looks like a no-contact.

B
Bernhard Hartmann

Firm

M
Margarete Leffler

The switch height is not bad. The cherry is a little more pressure than the low-noise axis.

A
Armani O'Reilly

Shipping fast good good good good good good good good good good good good it's good. It's good. It's good. It's good. It's good.

E
Edgardo Lowe

I'm Writing well on the keyboard.
I think it's the best of the tack tiles because of the noise.
I don't know the change, even if you lubricate it.
I recommend pure because it is tricky to disassembly

Anyway, I like the tack tile for the right height.

A
Alexandrine Conroy

Dina, who said that more than 100 came, is just 100.
Good to be quiet
The height pressure is high, so there is a taste of pressing rather than a low noise axis
Like YouTube videos, the angular sound is not...

R
Reva Armstrong

The number of them was matched and shipped quickly without bad. At times, the middle middle pin was bent and had to be stretched, but it was not bad, I'm really satisfied with the sound of a Pogle like a contactless point.

A
Alejandrin Swift

I love it. I want to buy it again.

R
Reanna Kerluke

Is that very good? It's a good key to feel chewy. The pressure is very cheap, and the price is made to buy at a reasonable price using the Coin..
Is that very good? It's a good key to feel chewy. The pressure is very cheap, and the price is made to buy at a reasonable price using the Coin..

K
Kaley Waters

Good.

C
Cleta Gusikowski

It's charming because it's chewy with low noise

J
Jaylen Satterfield

I'm worried because it's tack tile. I like the touch. Key Ablow. The upper part is transparent, so the RGB is clearly visible. Delivery seconds speed. The Khail box switch is always good, good, good. All right...

C
Christiana Bogisich

Well received.
It's quiet. It's okay.

M
Maureen Emmerich

Well received. Shipping is really super speed.
It's low noise and it's a long line, but it feels quite angular, so the sense of burning is fun.
I put it in Aura 87.
I liked Deepseed Axis, so I also got a whale. I wonder what it would be like.

M
Madilyn Morissette

And the real jaw-dropping feeling...
Next time, I'll buy a low-noise Island. Key gam

J
Josephine Raynor

Kailh box silent switches Deep Sea Pro islet switch quietest keyboard switches

J
Jean Beatty

It's good because it's in the keg. I like the low key pressure, but I was worried that the tack tile had high height pressure, but I felt that lee is not high. Rather, the rear feels heavier, so when the part of the yotaek tile passes, it goes into the mouth, and it is in the hand. Lee goes less
It feels good and recommended.

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