About Us

Another Langage: 日本語

GreenEchoes Studio – stimulates intellectual curiosity through keyboarding and writing.

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We are a private business founded in 2019.

Due to the de facto dissolution of its predecessor, the music label GreenEchoes Studio, Kawamura, who had served as its representative, took over its name and started it as a website management business.

Our Thoughts

Our mission is to provide services that satisfy our users.

GreenEchoes Studio provides “know, choose, and enjoy” experiences through media and products.

Our mission is to communicate information about keyboards and communications correctly and with passion.

We aim to create new value by connecting readers, makers, and creators, while playing a role in both information dissemination and development support.

From the Representative

GreenEchoes Studio began as a personal passion.

Even within the small world of the keyboard, an astonishing variety of ideas, designs, and cultures live and breathe.

We hope to convey this appeal to a wider audience and expand the possibilities of manufacturing.

– Ryosuke Kawamura (Representative)

For a detailed profile, click here.

• Click here to view our portfolio as an author and supervisor.
• Click here to learn more about the media we operate and supervise.

Mission, Vision and Values

Mission

Bridging technology and culture to foster curiosity.

Vision

Transcending the boundaries between media and manufacturing,
builds an ecosystem that connects “creators, communicators, and users.

Value

• Integrity.
• Transmission rooted in experience
• Growing with our partners

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Main Business Areas

Media Management

• Greenkeys (media specializing in keyboards)
• AiR-WiFi Magazine (Telecommunications and eSIM comparison media)

Brand support and review production

• Localization and translation support for domestic and international manufacturers
• Product reviews, photography, and production of interview articles

Product planning and development cooperation

• Original “Gravity” series keyboards
• Presided over JIS Layout Alliance (JLA)
• Development support for keyboard and keycap brands

Business Overview

Sole proprietorship business name	GreenEchoes Studio (GreenEchoes Studio)
the Dun & Bradstreet D-U-N-S® Number	718572009
Establishment	January 18, 2019
Location	2-1-5 Kandoji Minami, Chuo-ku, Niigata City, Niigata 950-0986, Japan
Name of Representative	Ryosuke Kawamura ( Profile )
TEL	050-5361-9238 Please contact us via email or inquiry form.
mail (usu. in phrases like “e-mail”, “text message”, etc.)	info@greenechoes-studio.com
contact information (for inquiries) (e.g. corporate phone number)	Please click here.
Home Page	https://company.greenechoes-studio.com
Business Hours	irregular
Business	Website management, etc.
Qualified Billing Business Registration Number	T1810709262352
Press Release	GreenEchoes Studio｜PRTIMES

Business History

List of Business Partners

• FREEDiVE Corporation
• Niigata SEO Information Bureau
• Shenzhen Lofree culture co.
• shenzhen keytok technology co.
• Keyreative
• SANYO., LLC.
• Keyreative
• Jezail Funder Japan
• zfrontier
• Cerakey
• NuPhy
• DIGIART (NuPhy Japan)
• Lofree Japan
• Keychron.com
• KPrepublic Store
• FKcaps
• YUZU Custom Keycaps
• Mode Design Keyboard
• KIBU Corporation
• MelGeek
• KEEBMAT™️
• Niz Keyboard
• Wuque Studio
• Akko
• MONSGEEK by Akko
• MELETRIX
• see the fluffy ones
• MMKeyboard

the rest

Media Coverage and Events

The following is a partial list of major media coverage of GreenEchoes Studio, its media outlet “Greenkeys”, and its product series “Gravity”.

Publication results of “Greenkeys”, a media specialized in keyboards

• MONOLAB “No Soldering Required! The Homebrew Keyboard Revolution Started with ‘Gravity45’ [Complete Guide]” – In the article, the activities of GreenEchoes Studio and Greenkeys, a media company specializing in keyboards, are introduced.
• FMV My Page “Homebrew keyboards are not difficult anymore! Get started with ‘Gravity45′” – Introduces Greenkeys’ positioning as the “Gravity45” as an entry-level homebrew keyboard.
• ASCII.jp “Greenkeys launches “Gravity45″ keyboard with multi-layout support” – In the company profile section, the media name is clearly stated as “Greenkeys, a media specializing in keyboards”.
• Kitanihon Shimbun Webun “Replacement keycap set fully compatible with HHKB Studio to go on sale in October” – introduced at the end of the article as “Keyboard specialist media ‘Greenkeys’: https://green-keys.info”.
• Yoshimura Special Parts Manufacturing official blog “〖Use例〗 Diamante Glass Palm Rest & Split Keyboard 〗” – Introduced under the name of Greenkeys as “provided by Ryosuke Kawamura/GREENKEYS”.
• NuPhy Japan official blog “NuPhy Air60HE Review – The definitive portable low-profile keyboard – by Green Keys” – posted on the official NuPhy website under the name Green Keys as the review author.
• PR TIMES “Left-right split keyboard ‘Gravity36’ from Greenkeys to go on sale on February 9, 2025” – Media name and URL are specified in the company introduction section in the press release as “Greenkeys, the media specializing in keyboards.

Gravity Series (Gravity36 / Gravity45) Listing Results

Gravity36

• Make Your Own Keyboard: GreenKeys’ Split Keyboard Is Beautiful and Functional (Gizmodo Japan)
• Gravity36 v2, a split left-right homebrew keyboard kit (PC Watch)
• Greenkeys’ Gravity36 DIY Keyboard Kit with 36 Keys (ITmedia PC USER)
• How about an introduction to homebrew keyboards? Gravity36 Review (Mac Fan Portal)
• Gravity36, a left-right split DIY keyboard kit with a unique layout, goes on sale this week. One-handed pad use is also possible (Hermitage Akihabara / GDM)
• Good for an introduction to home-built keyboards? Left-right split keyboard “Gravity36” is now available (one-suite)
• Split Left/Right Keyboard] Gravity36 to go on sale on February 9, 2025. <Collaboration campaign with Yoshimura Special Parts Manufacturing > (MONOist / MONOLAB)
• New Product] “Gravity36” Split Left/Right Keyboard from Greenkeys (KCEHC)
• Gravity36, a left-right split keyboard from Greenkeys, will be available February 9, 2025 (PC GAME Navi)

Gravity45

• GreenEchoes Studio Launches Gravity45, a Compactly Designed Keyboard Kit for Split Layouts (ITmedia PC USER)
• Separate left and right hand homebrew keyboard kit “Gravity45”. Keyswitches sold separately. No soldering required (PC Watch)
• Take on the 40% keyboard challenge! The Gravity45 homebrew kit is the perfect introduction! (Mac Fan Portal)
• No soldering required! The 40% Layout Expands the World of Typing (MONOLAB)
• Greenkeys’ Gravity45 Keyboard with Multi-layout Support Available August 27, 2025 (ASCII.jp *Reprinted from PR TIMES)
• New typing experience with “Gravity45. Home-built Keyboard from Niigata Goes Nationwide (NiigataDays)
• Even beginners will feel at ease! The Gravity45, a self-made keyboard with multi-layout support, is now available (Third News / 3rd Innovation)