Usage Tips:User-Friendly Design: Adjusting the is as simple as rotating the central knob clockwise to set the desired duration. Its robust cover, fashioned from high-quality materials, ensures the 's while providing utmost safety during handling, making it reliable for everyday use. Versatile and Functional: With a capability of up to 60 minutes, this analog excels in a of settings - from cooking in the kitchen, focusing during study sessions, managing tasks efficiently, to timing meetings accurately, fostering productivity and discipline in various aspects of . Silent Operation with Adjustable Alerts: Operates in complete silence, perfect for noise-sensitive environments such as libraries or study rooms. Customize alert volumes to your preference with options including mute, weak, or loud, and choose between a brief 3-second or extended 30-second alarm duration for added convenience. Reliable Performance and Support: Equipped with a low-battery indicator to continuous accuracy, the requires 2 AAA batteries (not included). Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Green Material:Plastic Package Contents: 1 * Silent Visual Alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.