Will Chronos fit my watch?

Chronos fits on most watches, especially those with a diameter of 31mm or larger.
Click here to use our measuring tool to see if Chronos fits on your watch.

What smartphones work with Chronos?

Chronos works with all Apple devices running iOS 8.0+ (with Android coming soon!) You can download the app for free in the Apple App Store and the Google Play Store.

Are there magnets in Chronos that could affect the expensive movement in my watch?

No. We have carefully avoided the use of magnets that could interfere and damage the movement inside the watches we love. Instead, we use harmless microsuction to attach to the back of your timepiece.

How long does the Chronos battery last?

3 days on a full charge. We recommend charging it when you sleep at night, but don't worry if you forget, it only takes about 30 minutes to fully charge it back up.

How do I charge the Chronos?

Simply place your Chronos (you can keep it attached to your watch) on the included wireless charger.

How will I know when to charge the Chronos?

The app and Chronos disc will notify you when your battery is low.

How do I control and customize notifications on my Chronos?

After pairing your device with the Chronos app, you'll easily be able to customize your specific vibration and light notification patterns.

How do I change the battery?

The Chronos uses a rechargeable lithium ion battery, which means you never need to change it.

Is Chronos waterproof?

With an IP67 rating, the Chronos is water-resistant, but we don't recommend prolonged time underwater, as the moisture could affect the microsuction and lead to the disc detaching from your watch.

Will I need to replace the microsuction?

No, microsuction is designed for repeated use without replacement. If you feel that it's not as strong as it used to be, simply run the Chronos under water for about a minute to clean off any residue and the microsuction will be good as new.

How easy is it to remove the Chronos from your watch?

Easy! If you leave the Chronos on a watch for prolonged periods of time, the microsuction may become a bit stronger and it'll take a little more strength to pull it off your watch. Rest assured, it won't leave any residue behind nor will it damage your watch.

Which languages are supported by the Chronos app?

Currently, only English.

How many different notifications can I customize?

With 8 different vibration patterns and 7 different LED colors, you can create up to 56 combinations. (Plus, we're adding more vibration patterns and colors all the time.) Get creative and customize your favorite contacts and apps with your unique combinations or use our suggested notifications.

What is Chronos made of?

Designed to match the back of your watch, the Chronos casing is made out of 316L grade stainless steel, with a polycarbonate window for light notifications.