Watch band replacement

If you can, get yourself a small flathead screwdriver and grind or cut out the middle to resemble a barbecue fork. This will help you to hold down and move the springbar. If you can't grind or cut it, just use it to hold down the ledge that springs down (like a toilet paper holder) and push it over with that. It will probably take a few trials, because it is difficult without the right tools.