Give your new watch a name:

How does is work?

At least two measurements are required for calculating the accuracy.
Wait at least 12 hours between measurements to ensure accuracy.

Sounds complicated? Just start, you'll be guided through the process.

You've just created your first measurement.

To calculate the accuracy of your watch, you've to add a second measurement later. At least 12 hours should pass between two measurements in order to be accurate.

Are you sure that you want to delete undefined?

This CAN NOT be undone.