Material: Stainless steel and ABS plastic - can be wiped with a damp cloth if necessary. Laser diamond facet design. Function: Timer function to keep track of tasks while cooking. A loud acoustic signal sounds when the time is up, used for timing during cooking, exercising, studying, and more. Mechanical design: This kitchen timer is mechanical and does not require batteries. Do not rotate the dial counterclockwise, as this may damage the timer. Magnetic base: 60-minute countdown timer with magnetic back, allowing it to be attached to refrigerators, ovens, disinfection cabinets, and other metal surfaces. Instructions: Turn the timer clockwise one full rotation until the zero mark aligns with the pointer, then set to the desired number of minutes. The acoustic signal sounds when time expires. Size: Approximately 7.9 x 7.9 x 3.2 cm. Quantity: 1 piece. Note: Measurements are taken manually; allow 1-3 cm variation due to measurement method. Color may vary slightly due to lighting and screen settings. Product received may vary slightly from images shown.