Elecom will release a redesigned version of its signature egg-shaped "EGG MOUSE" in mid-July 2026[1]. Marking the company's 40th anniversary, this third redesign comes with two interchangeable silicone "Soft Shell" covers, letting you change the look to match the scene or your mood. It also packs practical features such as silent buttons across the board and Bluetooth multi-pairing, with pre-orders opening on June 30[1].
A Third Redesign of a 1988 Classic
The original EGG MOUSE first appeared in 1988. At a time when square mice were the norm, Elecom was an early mover in proposing an egg shape that fits the hand, and the company says it became the prototype for the form factor that is now mainstream[1]. Elecom has maintained a strong presence in the mouse category for years: in the "BCN AWARD" mouse segment, it ranked first in domestic unit sales for 26 consecutive years based on sales figures from January 2000 to December 2025[1].
This new model is the third redesign counting from that original. Having reached its 40th anniversary in May 2026, Elecom set out a new concept, "A picture-worthy everyday," aiming for something that adds color to daily life rather than being just an input device. The company emphasizes that it leaned further into the rounded egg shape, creating a presence that downplays the look of a typical gadget[1].
The New Twist: Swappable "Soft Shell" Covers
The headline addition is the dedicated silicone "Soft Shell" cover that slips over the body. Two colors are included, so you can swap them to suit the scene or your mood[1]. The surface has a smooth, seamless-looking finish designed to give the mouse a cohesive appearance.
The Soft Shell is more than a cosmetic accessory. It offers a pleasant, smooth grip, can be washed to stay clean, and also protects the body from scratches and dirt[1]. The body itself is compact enough to rest in your palm, and its symmetrical design works for either hand.
Plenty of Everyday Features Too
Beyond looks, the mouse covers the essentials for daily use. Every button is designed to be silent, so clicks don't produce a sharp clicking noise — handy in meetings, cafés, or shared offices where others are nearby[1].
It is a wireless Bluetooth model that supports three-channel multi-pairing. You can register up to three devices and switch between them with a single switch, making it easy to use a PC at home and a tablet on the go[1]. It has four buttons in total — left, right, the wheel, and an assignable function button. By default the function button is mapped to "Back," which is handy for web browsing, and the free "Elecom Mouse Assistant" software (Windows and macOS only) lets you reassign it to functions such as copy or gestures[1].
For tracking, it uses a BlueLED sensor that works reliably even on surfaces with small bumps or dust, including wood, resin, and glass desks, as well as notebooks and tablecloths. It runs on a single replaceable AAA battery, and a power button on the underside helps curb battery drain when not in use[1].
Price, Release, and In-Store Preview
The new model is split by body color, with five options: Black (M-EGG40BBXSSBK), White (M-EGG40BBXSSWH), Blue (M-EGG40BBXSSBU), Pink (M-EGG40BBXSSPN), and Yellow (M-EGG40BBXSSYL), all at an open price[2]. According to early coverage from various media outlets, the street price is expected to be around 5,000 yen[3].
The release is set for mid-July, but from June 30 the mouse went on display with pre-orders at Tsutaya Electrics' "Tsutaya Electrics+" in Futako-Tamagawa, and pre-orders also opened at the Elecom Direct Shop from 12:00 the same day[1]. For anyone who wants to check the feel and handling before buying, the in-store hands-on experience should help with the decision.
Summary
Elecom's new EGG MOUSE revisits a classic egg-shaped design for the company's 40th anniversary, using swappable Soft Shell covers to give the tool a sense of personality. It also covers everyday essentials such as silent buttons, Bluetooth multi-pairing, and a BlueLED sensor, striking a balance between design and practicality. It comes in five colors, is slated for a mid-July launch, and pre-orders are already underway.
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