How will you spend your day today?

Take a break if you need one. Keep moving if that feels right. MENTAGRAPH reflects your feelings just as they are.

Small choices that begin with self-awareness can turn an ordinary day into a more comfortable one.

Toward a Future That Embraces Every Part of You

Choose what feels true to you over what simply feels "right". Choose what fits you over what fits everyone else.

MENTAGRAPH helps you listen to your inner voice, acknowledge every part of yourself, and find gentle next steps.

When you stop forcing answers, new discoveries and meaningful moments naturally come into view, each one adding richness to your everyday life.

Born from D-LAB: Exploring the Depths of "Delightful Moments"

D-LAB, the corporate R&D organization of JT (Japan Tobacco Inc.), studies, explores, and creates new possibilities for "Delightful Moments", a concept that reflects emotional richness, from a long-term perspective.

MENTAGRAPH grew out of this exploration. It is a wellness-tech company dedicated to capturing the state of the mind and creating experiences that help people design their moods and actions in ways that feel true to themselves

About D-LAB

Knowing Your Mind Is a Path to Freedom

Our moods and energy shift constantly, sometimes within just a few moments.
You may feel full of life one minute, and unexpectedly tired the next.

MENTAGRAPH visualizes these subtle fluctuations, helping you notice and understand how you are feeling in the moment.

The goal isn’t to suppress or fix those changes.
Freedom begins when you accept the emotional fluctuations just as they are.

That acceptance becomes the first step toward living more authentically.

Products

Relaxonic Cover

An eye-mask device that gently envelops your eyes with ultra-high-frequency hypersonic sound and soothing warmth—creating a quiet moment to restore yourself.

View details and purchase

Mental Battery Service

Mental Battery App

A daily companion that visualizes your emotional rhythm through biometric data, gently revealing your condition and helping you reconnect with your own pace.

Mentoring 2

A ring-type wearable that detects subtle emotional changes. In sync with the app, it quietly watches over your emotional shifts throughout the day.

Mental Battery for business

Bringing greater understanding of individual emotions into the workplace.
MENTAGRAPH extends this experience into organizations, fostering relationships where individuals and teams can be themselves and work together with trust.

News

2026-01-13

Event

[CES 2026 Debut Report] MENTAGRAPH Shares Its Perspective on Emotional Rhythm at CES 2026— Introducing Mentoring 2 and Relaxonic Cover, Quiet Technologies for Awareness and Rest —

2026-01-06

Event

[CES 2026 starts January 6th] JT consolidated subsidiary MENTAGRAPH announces "Mentoring 2," a smart ring that visualizes and supports "mental wealth"

2025-12-11

Media

MENTAGRAPH to Debut at CES 2026, Presenting a New Way to Understand Emotional Rhythm and Everyday Balance

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