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Carbon case with suspension arm design, featuring Smartphone Link

These analog-digital combination timepieces with Smartphone Link functionality boast a carbon fiber-reinforced resin case with a suspension arm design born of a “real motorsports” concept. Packed with design touches and technologies to support real-world racetrack use and add flair to motorsports enthusiasts’ lifestyles.


Carbon fiber-reinforced resin case with suspension arm design

Unique case design with a motif inspired by formula car suspension. Just like the four-arm suspension used in race cars, with two arms above and two below, the lugs are configured in a four-arm arrangement. Carbon fiber-reinforced resin is used as the case material, delivering both strength and lightness.


“Real motorsports” concept expressing the dynamic energy of race cars

The wide stainless-steel bezel features a hairline finish that accentuates the texture of the metal, presenting a timepiece with the powerful appearance of a winner. The chronograph dial incorporates a bold layout with a large LCD and voluminous index marks and hour and minute hands, creating a dimensional, high-contrast structure that further enhances visibility.


Schedule timer to support precise time management

Automatically transfers schedule data entered in a smartphone’s calendar app to the watch and displays schedule start and end times on the LCD along with audible alerts. An inset dial indicator also counts down to the next scheduled event and shows the time remaining. A checkered flag pattern indicates that less than 30 minutes remain.

Product Movie

Product Movie
Smartphone Link


Smartphone Link for full functionality at your fingertips

From accurate time management to effective use of measurement data. Diverse functions to support onsite racing activities, now made available for your daily lifestyle.

- Automatic connection
The ECB-40 will connect automatically when within range of a paired smartphone, syncing with the smartphone’s time data to keep accurate time, all the time. (Must be within Bluetooth® range.)

- Automatic time adjustment
Automatically connects with a smartphone to make time adjustments when needed. Even when crossing time zones, local time will be displayed automatically. (Must be within Bluetooth® range.)

- World time (about 300 cities)
Select world time cities using the app and easily switch between home time and world time. Automatically adjusts for daylight saving time as well.

- Handy for watching motorsports events
In addition to the watch’s 200-lap memory when measuring lap times, it allows data transfer to the app as well. See lap time differences and fastest time at a glance — very handy features for watching races.

- Phone finder
Find your smartphone by making it ring with the push of a watch button. (Must be within Bluetooth® range.)

Super Illuminator (high-brightness auto double LED light) for readability in the dark

A high-luminosity double LED illuminates the dial and the LCD. Use the auto-light function when you don’t have a hand free — simply turning your wrist will cause the dial to light up.
*Image shows the ECB-40P-1A.

Multiple functions, all at your fingertips


 (Smartphone app)

- Automatic time adjustment

- Easy watch setting

- Stopwatch data transfer
Displays lap times down to the millisecond. See lap time differences and fastest time at a glance.

- World time (about 300 cities)

- Schedule timer
Syncs with a calendar app to show scheduled start/end times and time remaining on the watch.

- Phone finder


  • 10-bar water resistance
  • Smartphone Link (automatic connection)
  • Hand shift feature
  • World time (38 cities)
  • Airplane mode
  • 1/1000-second stopwatch
  • Countdown timer
  • 5 daily alarms
  • Auto double LED light (Super illuminator)

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