MECHANICAL WORK Our timer work by manually winding up mechanical. The deviation is +/-5% in line with industry standards. All of mechanical time managers are not exactly accurate to the second.Please understand it. No batteries are required. Just twostep to set a time. We provide an instruction in English for your convenience. HOME DECOR The appearance of the mechanical timer is exquisitely crafted. If you like cute things, The items can be used as good decoration to improve your happiness index. MULTIPLE USES Environmental accessories. The colorfully accessory add more interest to your kitchen. Perfect for kids activities, teaching, meeting, exercise and more. Great gifts for Mothers day or birthday or your friends etc. LOVELY DESIGN The adorable timer is made of plastic and precision steel. It does not lose its cute design and beautiful! Suitable for all age. ABOUT USAGE Please check the instruction before using, otherwise you might damage the timer, then the timer wont work and alarm.