I bought this watch on ebay and it is too tight. I need to buy a couple of spare links. The band is stainless steel. Casio Edifice EF550 RBSP

go to a jeweler or watch maker as they often have spare links from bands they adjust in shop when making a sale
take the watch in to match the links

Do you realize that this watch has a screw down crown to keep it waterproof?
Hold it in and turn it clockwise to lock it down.
Let me know if this helps.

go here > http://www.casio-radio-controlled.com/euro/support/ to download manual

try this link below there are several diffarant band adjustments that may help you
http://www.watchmaterial.com/How_to_size_a_watch_band.asp

Have a look at the links nearest the clasp.
These should have markings on to say which are removable. An arrow or some other indication.
Not sure if this watch has press pins that go through the whole bracelet or flip up catches on each band.

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Please dont forget to vote this answer was helpful.

Many thanks

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Thank you for contacting FixYa.
This link shows most watch band sizings:

http://www.webwatches.co.uk/how_to.htm

Best regards. Jewel

Select a clean, flat work surface where you can perform your watch band adjustment. Put down a piece of felt to protect the face of your Casio. Turn on a lamp near your workspace to better illuminate the watch components with which you will be working.

Lay your Casio face down on the protective felt. Look for the small arrows on the back of some of the watch links; these arrows indicate the removable watch links and the direction their pins should be removed.

Locate the pin hole above the arrow on the removable watch links. Insert the tip of a watch pin removal tool, or push pin, into the pin hole. Apply pressure to the link pin, in the direction indicated by the arrow, to free the pin and remove the link. A pair of needle-nose watch or jewelry pliers can be used to help pull out stubborn link pins. Remove as many links as necessary for your watch to fit perfectly.

Reserve the links and link pins that you remove from your Casio Edifice watch. Store the removed watch components in a small, clear, plastic zipper bag. These components can be used when repairing or expanding your Casio watch band.

WARNING:Casio recommends that customers have their watch bands sized by an authorized Casio watch dealer. Sizing the band of your Casio Edifice yourself may void the manufacturer's warranty on your watch. Contact Casio customer support for more warranty information.

mcdevito75 here, If your Casio has a metal band, you can remove 1--2 links, this takes a special tool called a link remover, best bet is to look for a small watch repair shop in your area. If your Casio has a strap, the buckle may be able to move up the strap to fit your wrist, if so, move the buckle up the strap to fit your wrist and cut offf the exccess strap. If not, you"ll have to replace the entire strap. Hope this helps.

How you go about putting in the extra links to make the bracelet fit your wrist?
Here's a link that may help, you'll need a couple of tools,
http://www.pmwf.com/Watches/WatchSchool/WS%2014%20How%20to%20Resize%20Common%20Bracelets/WS%2014%20How%20to%20Resize%20Bracelets.htm

On most brands, there are pins that form hinges for the links of strap. You need to push them out to remove links. Usually you would find arrows marked from inside of the metal bracelet which show you the direction in which to remove the pins. You can remove it if you have a small watch maker's screwdriver but you have to be careful. or get one of these ..
http://www.amazon.co.uk/Watch-bracelet-link-adjuster-remover/dp/B001ZKIL2S/ref=sr_1_1?ie=UTF8&s=watch&qid=1254695541&sr=8-1

which should help you to remove the link pins safely without scratching.