Pretty much.
It is possible to take out links with improvised tools. Hammer, drift punch, vise. Or a rusty nail and stone picked up along the roadside.
But you run a fair risk of injuring yourself, and it'll take ages to get the job done.
Apart from as a roadside fix to be able to finish the ride I can't recommend it.
Get a chain breaker and be done with it. It's faster, safer, and delivers a more reliable result.
After a lot of miles, yes, you do need to change the chain. Take it to a bike shop and they have a special tool to check if your chain needs to be replaced.
There are various types of bracelets and links, therefore it is advisable to use a bracelet sizing tool. Android Tool Kit for Strap and Bracelet Sizing ADTool Kit can be purchased online. The cost is approx. $35.00
To a fix a bike chain, you would need a hammer and pliers or a chain tool. The chain tool would be the easiest way to repair the chain. You can purchase a chain tool from the Amazon website. Once on the page, type "Chain Tool" into the search field at the top of the page and press enter to bring up the tools.
Undo wheel nuts, slacken chain tensioner(if applicable). Push wheel forward in the dropouts. This should give enough slack to unhook the chain. If you want the chain completely off you probably need a chain breaker tool. Some bikes are fitted with quick links/master links that can be opened w/o tools. Just look for a link that's different from the others.
Relic watches come with two or three links you can easily remove yourself. Take a look at the band, there should be a few places you can open it. Open all the links that you can (one to two links should come off). If you still need it smaller, you'll need to take it to a Jeweler or a Sears store - they have a tool they use to take off the other links.
To remove a bike chain, there is a special tool called a chain break tool, available at bike shops. What this tool does is push out a pin holding the links together. In an emergency, you could possibly use a vise to hold the chain, and a small nail punch to push out the pin. Using the tool designed for the job is much easier. If you are replacing links in the chain, or putting a new one on the bike, the tool can be used toreinstall the pin. Be careful when you push the pin out, that you don't push it completely out of both sides of the link. You want the pin to remain attached to one side of one link, or else you will spend a lot of time getting the pin reattached The tool can be somewhat expensive, so ask how much the bike shop would charge to remove the old worn out/rusty chain and install a new one. Refer to SheldonBrown.com/chains.html for more information and pictures to explain chain removal.
A chain breaker tool is used to break a chain on a bicycle, but the same tool is used to fix the chain. This type of tool may be purchased at Northern Tool, Elite Gates, Superstore and Harbor Freight.
Can't tell as it also depends on the frame size. Check out www.sheldonbrown.com and you'll find instructions there on how to size your chain properly. Oh, and use a chain breaker tool. For what they cost and how much easier they make it they're well worth the money.
You need a splined tool bit for the lockring and a chain whip to keep the cassette from rotating. Check out www.bicycletutor.com, there's bound to be a walk-through there.
you need a especial tool
If you want to remove a link from a Michael Kors watch on your own what you will need to do is flip it onto it's side. There you will notice that the links are held in place by pins. You will need to use a special tool in order to remove those links. It is always best to take the watch to a professional to do these things.
Apart from cleaning or lubricating, if there is anything wrong with the chain, you don't fix it, you replace it. The replacement must have exactly the same number of links as the original. Since the chain loops through the frame, you will need a chain-breaker tool to do the job (any bike shop). They're not expensive, but they are indispensable.