ONO Trading Co., Ltd. (Headquarters: Akasaka, Minato-ku, Tokyo) will be selling the "Sikakeyb Castle HM66 (66 keys / 60% / 8000Hz compatible)" competition gaming keyboard with magnetic switches exclusively on Amazon at a limited-time, limited-quantity special price to coincide with Amazon Prime Day and the early sale period in 2026.

For FPS and fighting game players who want a magnetic keyboard with rapid trigger, want to reduce input lag with 8000Hz, or are looking for a space-saving 60% gaming keyboard. This competition-focused keyboard, featuring a refined white body, aims to resolve long-standing "device limitations" such as losing gunfights due to delayed stopping, input remaining active even after releasing a key, or not being able to move the mouse freely with low sensitivity due to a cramped desk, all thanks to its 0.01mm precision rapid trigger and top-class 8000Hz polling rate.

Sale Period: Amazon Prime Day & Early Sale

Early Sale: July 7, 2026 (Tue) 0:00 - July 9, 2026 (Thu) 23:59 Prime Day Main Sale: July 10, 2026 (Fri) 0:00 - July 13, 2026 (Mon) 23:59

*Available in limited quantities and will end once sold out.

Campaign Site URL: https://www.amazon.co.jp/dp/B0DH879TFM

〇 Why Castle HM66 is "Winning" - 3 Core Specifications

[1] Victory is decided "the moment you release the key" - 0.01mm Rapid Trigger

Stopping accuracy in FPS games is directly linked to rapid trigger performance. Traditional mechanical keyboards cannot accept the next input until a pressed key returns to a certain position, limiting high-speed directional changes. The Castle HM66 detects key movement in real-time with 0.01mm precision, resetting instantly upon release. Furthermore, the actuation point can be finely adjusted from 0.01mm to 4.0mm, perfectly accommodating preferences such as "reacting to a light touch" or "setting a deeper press to prevent accidental activation."

[2] Polling Rate is 8 Times the General 1000Hz

While typical competition keyboards operate at 1000Hz, the Castle HM66 achieves a native 8000Hz. By transmitting input information 8000 times per second, it minimizes input latency to the extreme, providing an overwhelming advantage in competitive scenes where reaction speed determines victory.

[3] GATERON Magnetic Jade Switch - Long-Term Stable Operation with Zero Physical Contacts

The adopted GATERON Magnetic Jade Switch uses a magnetic sensor method without physical contacts. There is no concern about contact wear or chattering, which are unavoidable with traditional mechanical switches. It maintains a pleasant typing sound and smooth operation, just like on the first day of purchase, for a long time.

〇 Additionally, 3 Features You'll Appreciate for Daily Use

[1] Intuitively Build Your "Personal Competition Environment" with Dedicated Software

The dedicated app allows for intuitive, centralized management of actuation point adjustment, reset point settings, key assignments, and RGB lighting control. You can build your own personalized operating environment from the day you unbox it.

[2] 60% Compact Design Maximizes Mouse Movement Space

The 66-key, 60% layout efficiently utilizes desk space, ensuring ample room for wide mouse movements even with low sensitivity. Compatibility with GH60 allows the use of existing custom keycaps, making it ideal for users who prioritize not only performance but also customization.

[3] RGB Backlight x PBT Keycaps for Lasting Beauty and Typing Feel

Equipped with customizable RGB backlighting. Made with durable PBT material (OEM profile) that resists wear from long, intense gaming sessions and suppresses surface shine, maintaining its premium texture for a long time.

〇 The Big Sale "Amazon Prime Day" - The Key is Not to Miss the "Buying Opportunity"!

The "Sikakeyb Castle HM66" condenses 0.01mm rapid trigger precision and high-end 8000Hz polling rate specifications into a compact white body. For all gamers where reaction speed and accuracy determine victory, including FPS, fighting, and rhythm games. For those considering an upgrade to their gaming environment, the Amazon Prime Day period, lasting up to 7 days including the early sale, is a prime opportunity not to be missed. Available in limited quantities and will end once sold out.

Sale Period: Amazon Prime Day & Early Sale

Early Sale: July 7, 2026 (Tue) 0:00 - July 9, 2026 (Thu) 23:59 Prime Day Main Sale: July 10, 2026 (Fri) 0:00 - July 13, 2026 (Mon) 23:59

※Available in limited quantities and will end once sold out.

Campaign Site URL: https://www.amazon.co.jp/dp/B0DH879TFM

------- Product Overview -----------------------------------------------------------

<Product Details>

Manufacturer: Sikakeyb

Model Number: Sikakeyb Castle HM66

Keyboard Type: Compact Keyboard

Color: White

Language: English

Key Layout: US Array / 60% (Number of Keys 64 (66))

Switch Structure: Magnetic

Switch Manufacturer: Gateron

Switch: KS-20T Jade switch

Actuation Point: 0.01 - 4.0mm (Adjustable in 0.01mm increments)

Rapid Trigger: 0.01 - 4.0mm (Adjustable in 0.01mm increments)

Keycaps: PBT OEM Keycaps

Hot-swappable: Supported

Backlight: Included (with temperature compensation function)

LED Color: RGB

Connection Interface: USB

Polling Rate: 8000Hz

Software: HM Driver

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------- Contact Information for Inquiries -----------------------------------

Company Name: ONO Trading Co., Ltd.

Address: 3-11-15 Akasaka, Minato-ku, Tokyo VORT Akasaka-Mitsuke 4F

Business Activities: Import and Trading Business

TEL: 03-6869-0665 (Main)

Reception Hours: Weekdays 10:00 - 17:00

HP: https://www.ono-boeki.com

E-mail: [email protected]

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【Regarding Trademarks】

*Company names and product names listed are registered trademarks or trademarks of their respective companies.

*This product is an original product of Sikakeyb and is not a licensed product of the companies listed above.

FACT BOX

  • Source: PR TIMES
  • Category: 製品発売
  • Organizations: Sikakeyb / Gateron