Using this Tissot watch is easy. Just wear it on your wrist and it will start working automatically thanks to the automatic movement. When you take it off, it can keep running for up to 80 hours. For daily use, it can resist water up to 50 meters, but don't wear it for deep - sea diving. To keep it in good condition, clean the stainless - steel case and bracelet regularly with a soft cloth. Avoid hitting the watch against hard objects as it might damage the internal movement or the sapphire crystal. If you have any problems, it's best to take it to an authorized Tissot service center.