Using your Diesel DZ4594 Griffed Chronograph is a breeze. Just set the time and date as you would with a regular watch. To use the chronograph, press the top button to start, the middle button to stop, and the bottom button to reset. When wearing it, avoid knocking it against hard objects as it may damage the case or the watch hands. Also, although it has 50m water resistance, it's best not to wear it while diving or in hot water. For maintenance, clean the watch regularly with a soft, dry cloth. Keep it away from magnetic fields as they can affect the quartz movement. If you have any further questions, feel free to contact Diesel's customer service.