1. Loosen the screws on the side of the bracelet link which is to be removed or added.
2. Remove the superfluous bracelet link or insert a new one.
3. Before screwing tight, add a small drop (no more!) of thread-locker (AN 302-42 medium-tight) to the thread of the bracelet screw.

1. Release the silicone band from the clasp. To do so, use the pointed end of the band replacement tool to push the spring bar out of the fastener. The other side of the spring bar can be removed while the fastener is open, enabling you to remove the silicone band.
2. Using a knife or scissors, cut the silicone band in the middle between two metal pins. You should shorten the band symmetrically and little by little, starting from the clasp, until you have reached the desired length. Test the length from time to time before proceeding. Shortening both ends by the length of one metal pin results in a total difference of 10 mm in the length of the strap; shortening one end reduces the length by 5 mm.
3. Remove the first metal pin and replace it with the spring bar. Then reattach the clasp to the band.

We recommend first inserting the bar at the red marker, as per the illustration. If the silicone strap is too tight, use the option shown in the illustration by the white marker.

We recommend that you fit the folding clasp before shortening the silicone strap. Doing so will enable you to make a better assessment of whether you need to shorten the silicone strap. To avoid misunderstandings or mistakes, you should fit the two halves of the silicone strap exactly as described below.

On the silicone strap half with the SINN logo, insert spring bar A (see diagram) into the empty hole at position 1. If a spring bar has already been pre-installed, replace this in any case with spring bar A.

Then attach the folding clasp to this silicone strap half. To do this, insert the silicone strap half with the spring bar on one side into the hole in the folding clasp.

Using the band replacement tool, press on the plate on the opposite side of the spring bar to position it in the hole. Pull on it to check whether the folding clasp is secure.

Next, on the silicone strap half without the SINN logo, remove the metal pin at position 2 and replace it by stud B (see diagram).

Slide the stud as centrally as possible into position 2, so that both tapered ends of the stud protrude laterally from the strap. Then place the removed metal pin into the empty hole at position 1.

If a spring bar is already pre-installed at this position, remove it and insert the metal pin referred to above. The pin acts as an adjustment tool and increases the stability of the strap guide when pulled laterally.

Open the retaining bar on the unfolded folding clasp and guide the silicone strap half with the stud B at position 2 from above via the insertion slot into the guide rails of the folding clasp.

Position the silicone strap so that you can move it at least one position forward and one position back (standard position, see diagram). To make the silicone strap tighter, move it one position to the left. To make the silicone strap looser, move it one position to the right.

Bring the silicone strap to the standard position and press the retainer bar into the appropriate free spindle on the silicone strap. Check whether the retainer bar is securely locked into place. Try on the fully fitted silicone strap on your wrist.

We recommend that you fit the folding clasp before shortening the silicone strap.

Doing so will enable you to make a better assessment of whether you need to shorten the silicone strap.

Take the watch off your wrist. Remove both silicone strap halves from the clasp. On the firmly mounted silicone strap half, use the pointed end of the strap replacement tool to push the spring bar out of the fastener. The other side of the spring bar can be removed while the fastener is open, enabling you to remove the silicone strap.

Now loosen the other side of the claps with the strap-length quick adjustment. To open the retainer bar, take the unfolded folding clap in your hand. To fix your grip, press firmly on the underside of the folding clasp with your thumb. Ensure that you do not obstruct the retaining bar with your thumb. Hold the silicone strap with your other hand to open the retaining bar with a lever action. To do this, fold the side of the silicone strap facing away from you upwards.

Then guide the silicone strap out of the guide rail via the insertion slot.

Shortening of the silicone strap should be carried out symmetrically and on a step-by-step basis until the desired strap length has been achieved. If asymmetric shortening is necessary, the body-facing side should be shortened more.

Keep trying on the silicone strap in between. Shortening on both sides by one hole in each case corresponds to a reduction of the total size by 10 mm – a one-sided length reduction of 5 mm.

Please note: To use the strap-length quick adjustment, the stud on the silicone strap half without the SINN logo must always be in position 2, a metal pin is always located in position 1.

Use the stud to determine the margin for the strap-length quick adjustment so that you will be able to compensate for a changed wrist circumference (e.g. due to temperature-related variations). To use a minimum margin, at least four positions should always be occupied on the silicone strap half without the SINN logo, in the following sequence: Metal pin 1, stud 2 and two additional metal pins 3, 4 (see diagram).