Evoking the colour gradation from cold blue to red hot
seen in a sports car’s titanium muffler
A mechanical-face design accented by colour gradation that evokes the temperature spectrum,
a unique phenomenon seen when the titanium mufflers of sports cars get hot.
The beautiful spectrum, shifting from blue to red, gives the watch a look of sporty assertiveness.
When exhaust heat makes a titanium muffler change colour, a beautiful colour gradation appears, from cold blue to red hot.
We’ve captured this phenomenon here, along with a brilliant gold tone, for a design inspired by the love of car tuning.
Metal mesh decorates the dial in a sports car-grille motif, and the precision dial construction gives it just the right mechanical touch.
*Above description applies to ECB-S100HG, EQB-1200HG and EFS-S610HG.
The black IP on the stainless-steel case and band makes the blue-to-red colour gradation really shine.
The hairline finish gives the metal a sense of quality.
*Above description applies to ECB-S100HG and EQB-1200HG.

Solar charging system
ECB-S100HG, EQB-1200HG and EFS-S610HG
Solar panels on the dial convert light to power to charge the internal battery, ensuring stable operation of all functions.
*Graphic is included for illustrative purposes.

Sapphire crystal
ECB-S100HG, EQB-1200HG and EFS-S610HG
The glass is made from scratch-resistant sapphire crystal with an anti-reflective coating.

Super Illuminator for readability in the dark
ECB-S100HG
A high-luminosity double LED illuminates the dial and the LCD for visibility in dark environment.
*Image shows the ECB-S100D-1A.
Smartphone app
- Timer/alarm setting
Set the time in the app, then sync it with the watch. The countdown indicator appears on the inset dial 30 minutes in advance.
- Time & Place (available on ECB-S100HG)
Pressing a button on the watch records the current time and position on a map within the app.
- Stopwatch data transfer
Displays lap times down to the millisecond. See lap time differences and fastest time at a glance.
- Automatic time adjustment (four times a day)
- World time for over 300 cities
- Home time/world time switching
- Phone finder
SPECIFICATIONS
ECB-S100HG
- 10-bar water resistance
- Tough Solar (Solar powered)
- Smartphone Link
- World time (38 cities)
- 1/100-second stopwatch
- Countdown timer
- 5 daily alarms
- Double LED light (Super Illuminator)
EQB-1200HG
- 10-bar water resistance
- Tough Solar (Solar powered)
- Smartphone Link
- Dual time
- Stopwatch
- Alarm
- Date display
EFS-S610HG
- 10-bar water resistance
- Solar power
- Stopwatch
- Date display
EFR-573HG
- 10-bar water resistance
- Stopwatch
- Date display
Note: Bluetooth® is a registered trademark or trademark of Bluetooth SIG, Inc.