Introducing E-Strap
Make Any Analog Watch Smart


USD/EUR/CHF 229-249 (VAT incl.)
shipping starting end of May 2017

Built by the watch industry experts that created the Horological Smartwatch, Frederique Constant’s E-Strap is a logical next step to add smart functionality to existing watches. The ultra-small buckle extension can hardly be seen, as it is thin and covered by the leather strap. The Frederique Constant E-Strap is built on the full Horological Smartwatch Platform and its sophisticated functionality. The same MMT-365 App that accompany Horological Smartwatches is available to Frederique Constant E-Strap customers. Frederique Constant E-Straps track ACTIVITY with GET ACTIVE ALERTS as well as MONITOR SLEEP with SMART SLEEP ALARMS.

The Functions

  Activity tracking

  Sleep monitoring

  Sleep cycle alarms

  Get-Active alerts

  Dynamic coach

  Rechargeable battery

  Cloud backup and restore


On the iOS and Android apps, simple and easy-to-understand graphics highlight how much one has moved and slept during the day, week, or month. This data will assist users to better understand themselves, and along with appropriate goals setting and intelligent coaching, will improve their well-being. A better sleep pattern and a more active lifestyle are widely recognized as simple, but effective, positive behavioural changes.

The patented sensor-fusion engine tracks activity and sleep patterns with high accuracy. Activity and sleep information is presented in the MMT-365 companion application. The E-Strap will synchronize data automatically with applications on Apple and Android smartphones.


The E-Strap’s battery lasts for a week, offering its wearer a carefree usage for his everyday life. Its light and compact charger also makes it the perfect companion when travelling.

Sleep tracking

Although one spends a third of their lifetime sleeping, people are rarely aware of their sleep patterns and of the various ways to improve them. The E-Strap provides a comprehensive summary of its user’s daily sleep progress.


shipping starting end of May 2017