This method will only work if your watch backing has no screws. While you may be able to use other fingernails, your thumbnail is usually the largest and strongest.
Do not set your watch down as you work. Keep it in your other hand so you can maneuver it while prying it open.
This method is best done if you have long, healthy fingernails.
If there is no indentation but a space between the back and casing, you can use this method with a razor blade. Small kitchen knives can work in a pinch if you don’t have a razor blade.
Stress balls can work as a cheaper alternative. Avoid rubber balls made from hard materials. The ball needs to be soft and pliable so it can grip the backing. A super-cheap alternative is to reverse-wrap a new tennis ball with duct tape until completely covered. The duct tape adhesive is very sticky and the tennis ball gives you something to grip onto.
Apply pressure to the watch in increments to avoid accidentally damaging your watch.
Choose a pair of scissors with blunt tips to avoid injuring yourself if they slip.
When you’re ready to put the backing on again, you will use the same method but twist in a clockwise movement.
