Using this Diesel watch is easy. The chronograph function can be used to time events - just press the buttons on the side. The date window shows the current date. When wearing it, make sure the bracelet deployant clasp is securely fastened. As for maintenance, keep it away from harsh chemicals and extreme temperatures. Wipe it with a soft cloth regularly to keep it looking shiny. If you're going swimming or diving, it can handle up to 100 metres of water resistance, but it's still a good idea to rinse it with fresh water after exposure to saltwater or chlorine.