Elecom has begun selling a redesigned version of its "EGG MOUSE" to mark the company's 40th anniversary[1]. It is the third redesign counting from the original model, which debuted in 1988 with a hand-hugging egg shape at a time when boxy mice were the norm. The new model pairs a five-color lineup with a swappable "soft shell" cover that lets you change its color to match the scene, all built into a quiet wireless mouse[1][2].
An Egg-Shaped Lineage That Surprised the Industry 38 Years Ago
The first EGG MOUSE arrived in 1988. Angular, boxy mice were standard at the time, so a rounded egg shape that fit naturally into the palm was said to make a strong impression on the input-device industry[1][2].
That egg shape went on to become an Elecom signature. The company held the No. 1 spot for domestic mouse unit sales in the BCN Ranking for 26 consecutive years, from January 2000 through December 2025[1]. The EGG MOUSE itself evolved along the way, with the "Optical EGG MOUSE" adding an optical sensor in 2008, and the truss-structured, lightweight "EGG MOUSE FREE" arriving for the 30th anniversary in 2016[2]. This 2026 model is the fourth generation, introduced at the 40th-anniversary milestone.
A Third-Year Designer Redefined It from the Concept Up
One eye-catching aspect of this redesign is who worked on it. The people who led the effort from concept to product were a designer in their third year at the company and a project manager in their fifth year (first and third year, respectively, when the project began) — both young employees[1].
They engaged with the question of what the EGG MOUSE should be for today's Elecom starting from the concept, then worked through the five colors, the bundled soft shell, and a seamless, refined shape together with a partner factory. The behind-the-scenes story is shared in the developers' own words on the company's brand site, "Better being Stories"[4].
Reframing the Mouse as a "Product That Colors Daily Life"
The concept behind the new EGG MOUSE is to reinterpret the mouse from an office device into a "product that colors daily life"[2]. A silicone cover called the "soft shell" protects the body from scratches and dirt while letting you choose a color to suit the moment. Elecom says it carefully polished the finish so seams are hard to notice, paying attention to the feel of a tool you touch every day.
The design also aims for an object-like presence that looks good simply sitting on a desk. The actual units are on early display at "Tsutaya Electrics+," a next-generation showroom at Futako-tamagawa Tsutaya Electrics, from June 30 through December 15, 2026, where you can check the feel in person[1].
Key Specifications
Connectivity uses Bluetooth Low Energy, with communication of up to about 10 meters on the 2.4 GHz band[3]. The sensor resolution is 1000 DPI, and the mouse uses a quiet design. It runs on a single AAA battery, with a battery life of up to about 12 months when using an alkaline battery.
The mouse body measures about 53 mm wide by 70 mm deep by 46 mm tall, or about 55 by 71 by 47 mm with the soft shell fitted — a compact size that sits in the palm[3]. Supported operating systems are broad, covering Windows 11/10, macOS Tahoe 26 or later, iOS 26 or later, iPadOS 26 or later, Android 16 or later, and ChromeOS, so it works with PCs as well as smartphones and tablets. The package includes the mouse, one AAA alkaline battery for testing, two soft shells (in two colors), and a quick-start guide[3].
The white model's part number is M-EGG40BBXSSWH, and it can be purchased through Elecom's official direct shop and major e-commerce sites[1][3].
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エレコム ワイヤレスマウス EGG MOUSE 40th Anniversary Edition 静音 Bluetooth 1000DPI ソフトシェル付属 M-EGG40BBXSSWH ホワイト
Summary
The EGG MOUSE takes an input device that broke conventions with its egg shape in 1988 and rethinks it again at the 40-year mark. While covering practical points such as quiet Bluetooth connectivity and a 1000 DPI sensor, it aims — through swappable soft shells and a five-color lineup — to become something you want to leave sitting on your desk. Rather than chasing a spec race, it focuses on how to build attachment to a tool, and that focus, together with the young-employee-led development story, is what stays with you.
Source: https://prtimes.jp/main/html/rd/p/000001476.000026881.html
Source: https://www.elecom.co.jp/pickup/egg-mouse/
Source: https://www.elecom.co.jp/products/M-EGG40BBXSSWH.html
Source: https://www.elecom.co.jp/pickup/brand/contents/20260716-01/
