YASHANG PAY ATTENTION TO HOW TO USE IT TO AVOID THE TIMER NOT SOUNDING. Mechanically rotating, no need to charge or install battery, you dont have to worry about forgetting charge or suddenly dead battery, can be used for a long time, there will be no problem. This timer has a moderate sound size and is not harsh, but it can be heard in noisy environments. Easy to carry, very suitable for putting in a pocket or handbag. It not only plays a very important role in cooking, but also helps you manage your time while doing exercises. For example, exams, yoga, etc, make learning easier. It is not recommended to use mobile phone timing when learning, because the phone is very influential. SPECIFICATION Product Name: Kitchen mechanical timer. Shell material: plastic. Pattern Color: Gray puppy, Pink pig. Size: 6.5cm. Quantity: 2pcs. HOW TO USE: First rotate the timer clockwise one turn, then turn counterclockwise to the required time, the countdown starts, and the maximum can be set for 55 minutes. Package Including 2 x Kitchen timer.