This article covers ATTACK SHARK X820Ultra ワイヤレス メカニカル ゲーミングキーボード コイルケーブルサイドプリント PBT キーキャップ 2.4Ghz.

Overview

The ATTACK SHARK X820Ultra is a feature-loaded wireless mechanical keyboard that punches above its price point. It offers three connection methods—Bluetooth 5.0, 2.4GHz, and USB-C—so you can switch between a desktop PC, laptop, tablet, or smartphone without changing keyboards. The hot-swappable sockets support both 3-pin and 5-pin switches, making it easy to customize the feel without soldering. Inside, a five-layer gasket dampening setup reduces resonance and produces a clean, hi-fi typing sound. A 4000mAh battery powers the board for days of untethered use, and the programmable TFT display shows date, time, battery level, and more. The White Bamboo color scheme is exclusive to Japanese online retailers.

Connectivity & Compatibility

This keyboard connects via Bluetooth 5.0, 2.4GHz wireless (via the included dongle), or USB-C cable. Bluetooth is ideal for mobile devices, while 2.4GHz offers low-latency performance suitable for competitive gaming. The coiled USB-C cable is a nice premium touch—it looks good on the desk and is durable. The hot-swap socket is compatible with most 3- and 5-pin mechanical switches, allowing you to swap in your preferred switches. The onboard QMK web driver runs in any browser, so there’s no need to install software on your system. It works flawlessly with Windows and macOS. The TFT display can be customized via the same web driver.

Product Info

The X820Ultra White Bamboo edition is listed on Japanese online retailers at around ¥22,000. In the box, you’ll find the keyboard, a coiled USB-C cable, a keycap puller, a switch puller, and extra gift switches (likely linear, pre-lubed). The warranty is not explicitly stated on the product page, but ATTACK SHARK generally covers manufacturing defects. In terms of market position, this keyboard sits in the mid-to-high tier, delivering premium features—tri-mode wireless, hot-swap, gasket mount, TFT display, large battery—at a price that undercuts many competitors.

Best Use Cases

Typing enthusiasts will love the gasket mount and multi-layer dampening; it produces a deep, satisfying thock without being too loud for a shared office or late-night use. Gamers benefit from the 2.4GHz low-latency connection and full N-key rollover, ensuring every key press is registered accurately during intense gameplay. The TFT display shows battery status and time, so you’re never caught off-guard. For power users who dislike bloated software, the cloud-based driver is a breath of fresh air. However, if you rely on a dedicated number pad or extensive macro keys, note that this board likely uses a compact layout (check the exact key count on the product page). It’s also worth noting that the white bamboo color may show dirt more easily than darker finishes.

Product Disclosure (Amazon)

  • Manufacturer: AJAZZ
  • Seller: KASUAYA本店
  • Fulfilled by: KASUAYA本店
  • ASIN: B0GVHK6SWG
  • Note: This article covers a manufacturer-made product based on Amazon listing details.