Sinn Strap - 20 x 20 Silicone Black Rubber Compact Buckle - Matte Finish

Sinn Strap Deployant Buckle Compact - 20 mm width.

This strap was originally designed for Sinn chronograph watches with a 20 mm lug width, but many have used it on non-chronograph watches such as the Sinn 556 and the Sinn 856.

The strap will also work on these watches, but keep in mind that if you have a smaller wrist we recommend that you use this compact buckle and not the larger buckle. 

Also keep in mind that the silicon rubber is quite strong and can be stiff for a period of time, causing those with smaller wrists to have trouble making the watch sit correctly on the top of their wrist.