A pin popped out of my band and was lost. In addition, the curved piece that blends the band to the bezel of the watch was lost and not to be found. I can't locate a replacement band or replacement part anywhere. Help?

The battery is actually accessed from the front of the watch.
You should have a "Case Knife" to remove the front bezel.
Remove the band first.
Set the watch in its side. Set the case knife at the groove where the watch band holder meets the front bezel, and give the back of the knife a sharp rap with a small hammer. The front bezel should pop off.
Some watches have a small circular plastic piece that will also come out. Gently remove the movement from the front. The battery (CR 2025) can then be removed from the back of the movement using a small, thin blade. Install the new battery. The inside back of the case should have restart instructions. (Push A -left button once. then push and hold A until hands move to 12:00. Push B once to start reception.
The back of the watch is plastic. Don't try to remove it.
Gently re-assemble movemengt. A watch case press tool is best for finishing assembly. I would suggest taking the watch to a jeweler if you are uncomfortable taking this watch apart. Good luck

Hi, sizing the bracelet on your ceramic watch may void its warranty, making it ineligible to receive service from the manufacturer. If you want to keep your watch covered under warranty, contact your watch manufacturer for information on their customer repair service.
If you want to remove it yourself, you need a watch pin removal tool. You can use a watch pin removal tool to remove the link pins that secure the clasp pieces to your ceramic watch band.

But if you don't have a watch pin removal, follow the instruction below........

• Find a clean, flat, well-lit work surface where you can size the bracelet of your ceramic watch. For best results, spread a soft optical cloth over your work surface and perform your repair on top of the cloth. The cloth will help prevent you from losing any small watch components, like link pins, that may be freed during repair.
• Wrap the ceramic watch band around your wrist and count how many links overlap. Use this as a guideline for how many links should be removed. Note that the actual number of links to be removed may differ slightly from the original estimate. Remove excess links from your watch band one at a time to make sure that you don't end up accidentally making the band too short.
• Remove the excess watch links from the ends of the band with the attached clasp pieces. Look between the removable ceramic watch links to locate the silicone connector pieces that join the links. Use a pair of small, pointed scissors to make a cut between the link and the silicone connector, this will free the excess links. Cut on the side of the link that faces the watch clasp. Repeat the process on the other side of the ceramic watch band.
• Remove the clasp pieces from the ends of the removed watch links. Examine the clasp pieces to look for the metal pins that hold them in place. Push out the metal pins with a push pin to free the clasp pieces. You can now reattach them to the ends of your ceramic watch band.
• Examine the newly-shortened ends of your ceramic watch band. Without the clasp in place the silicone connector pieces will be exposed. Note the two small puncture holes that go straight through the silicone connector. Insert the teeth of one of the clasp pieces through the holes in the silicone connector from the bottom. Fold over the other side of the clasp piece, reinsert the metal link pin and push the clasp to click it into place. Attach the second clasp piece to the other side of the watch band using the same procedure.

No, he asked about a notched band, like on the Graves. Here the watch attaches not across the full 2cm or so but at two 6-7mm lengths around either side of a center protrusion, through which the pin slides.
Each pin consists of a longer part and a shorter end cap with a smaller pin maybe 2mm long that fits into the end of the longer hollow pin. These take a fairly serious pull to take apart, but must be pulled with care, for two reasons: one, so the pieces don't fly off and get lost when the pin comes apart, and two, so you don't accidentally torque the head sideways off the small pin, which is easy to do when you're pulling hard and not being careful. Vise-grips, with maybe thin wood like popsicle stick pieces to cushion the end caps might do, so you don't damage the end pieces as you squeeze, but again be careful. (If you do twist the endcap off its tiny pin, you might be able to glue it back with superglue (cyanoacrylate), but that's a patient precision operation by itself.)
Once the pieces are detached, the long pin will slide through the simple hole in the top and bottom protrusions from the watch case. You can customize your replacement band, set the pins, and gently compress them, again with widemouth pliers and a cushioning, they will go together more easily than they came apart.
Other Stauers use regular pins you can just pop off with the end of a pen knife, but this one is trickier.
Good luck :-)

This is most likely a metal band and the part you are talking about is the head piece. I do not know of any outlets that sale the head piece by itself. You will most likely have to buy a replacement band either from the watch manufacturer or an after market watch band supplier like Speidel.

Take the watch with the broken watchband and place it on the table. With a ruler, measure the width of the broken band at the point where it is attached to the watch. Now, measure the total length of the watchband when it is in one piece and fits around your wrist. There will be a crease on the band where it is normally buckled.

Step 2 Go to the local store and select a band that you like. You should make sure that the width of the band at the point of attachment to the watch is the same as the old band. Also make sure that the new band will be long enough and not too long to fit your wrist. Purchase the band and return home to change the band.

Step 3 Clear a spot to work and make sure that there is a small towel covering the table top so that you can see anything that may drop or pop out during the process of changing the band.

Step 4 Use a magnifying glass to look at the point where one side of the band is attached to the watch. You will see a small pin connecting the band to the watch on either side of the band. Carefully use the jeweler's screwdriver to depress the spring loaded pin from the watch to the band and release it from the watch. When the tension on the spring pin is released it may pop out of the band and you will want to take care not to lose it. Repeat this process with the other half of the band.

Step 5 Take the new band and slip the spring pins into the small holes on the end of the band where it will attach to the watch. Working with one end at a time, slip one side into the pin hole in the watch body.

Step 6 Use the jeweler's screwdriver to depress the other side of the spring pin and guide it into the pin hole in the other side of the watch body. Repeat this process with the other half of the watchband and other spring pin. You now have a new band for your broken one.

Stainless steel bracelet ends (so called wings) must be curved flush to the watch case.
Another way is to use curved spring lugs (pins).

The arrows you are seeing are for sizing the band. I cannot find 26311SS in my data base, but I have a good idea what you need to do. The curved piece is a safty that goes over the clasp. Take something like a round toothpick and with the curved piece going to the right like this: ( put the toothpick under the far lefthand side, in the middle and see if you can pry it up ,( I say use a tooth pick so not to scratch up your watch) it should flip over to the right.Check and see if there are any spring loaded buttons on either side of the clasp, if there is push them in ,and lift to your left If there is no buttons just pry up towards your left. If this dosn't work PLEASE let me know, and I will find the exact watch and we can go from there. Good luck!!

parsecent.com...they have all the parts to fix it with and they also have to band-to-case piece that you've lost

In addition to the Pin there is also a small inner "locking" collar about 2mm long that fits into the center section of each link.

I did not notice this collar at first and it fell to the ground when I removed the first link. Without this piece the Pin's will just slide through the links with no locking mechanism.

It fits neatly into the inner portion of the link directly opposite the arrow that shows the direction of removal on the band.

you would have to either have custom links made or buy a whole new band to be made the links pop out by pins and then shortened placed this way back together
but if you dont have extra links buying longer band is your better sollution cause creating a link or 2 to fits can be costly