Made of high-quality materials for durability. You don't need to repeatedly press the button when you need a standard time of 1, 5, 10, 25, 30, or 60 minutes. You can also set preset times to suit your personal needs. (2 AAA batteries not included) This timer is versatile and suitable for a variety of occasions, including office, work, meetings, tasks, study, reading, exercise, cooking, and countless other scenarios. In fact, you can use this timer for almost any situation you can imagine. Start the countdown with the screen facing up. Slide the switch to silent mode or ringtone, and the screen will turn on. Then wait 5 seconds, flip it over, and start counting again. If the preset time on the productivity timer is not what you want, you can press \"M+\" or \"M-\" to increase or decrease the minutes. After 5 seconds from the start of the countdown, it is not possible to adjust the minutes. Silent and ringtone: When you are working or reading in public, a flashing notification on the LCD screen lets you know when time is up, but in silent mode, others are not disturbed. You don't need to shout: \"Siri, set a timer for 30 minutes!\" Simply tell your child: \"Dinner in 30 minutes!\" Set the children's timer to ring, turn it on, and a loud, sweet sound will remind you. If you forget to turn it off, the sound will stop after 15 seconds. Dimensions: Approximately 65 x 75 mm. Material: Plastic. Color: Black. Package contents: 1 x Timer. This is only the package content; other products are not included. Note: Light reflections and different monitors may cause the color of the item in the picture to differ slightly from the actual item. The allowed measurement error is +/- 1-3 cm.