How to Use the Ratchet Clasp Rubber Strap

Sizing the cut-to-size (CTS) rubber strap

1. Attach the watch and strap to your wrist and check for a rough estimate on where the clasp would land. Add 2 additional notches as a safety buffer.  
   
   
2. Cut the strap at the estimated length + 2 notches. You can use a pair of scissors or a razor blade to remove material. I personally prefer razor blade as it produces a better finish. 
   
3. Install the strap onto the clasp and attach it to the watch to test the fit
   
   
4. Remove the rubber strap, cut one notch at a time and re-attach to test fit. 
   
5. Repeat step #4 until the desired tightness is achieved.

   Be patient during this step as once you cut away the material, you cannot lengthen it again.**Please use this link to purchase a spare strap in the event of overcutting. The spare rubber strap is sold individually instead of a pair.

Ratchet Clasp Functions

1. Open/Close: Press the top two side buttons to release the clasp.
   
   
2. Fixed micro adjustment: There are two fixed slots for a 1.5mm micro adjustment.
   
   
3. Release the RATCHET SYS™: Release the extension by pressing the bottom two side buttons to extend up to 17mm.
   
   
4. Compress the RATCHET SYS™:  Press both ends together to engage the ratchet mechanism to adjust up to 6 stops. 
   
   
5. Use the RATCHET SYS™ to adjust the strap length on-the-fly.