What’s the difference between the straight strap and the tapered strap?

The straight strap is 20 mm wide and will fit wrists with a circumference between 12 cm and 21 cm. The tapered strap is 16 mm wide and will fit wrists with a circumference between 12 cm and 20 cm.

Using your own strap

doppel comes with standard (16 mm) spring pins so it's possible to swap the straps for another set at home, or with help from any good jeweler.