Metal Body: The lock body is made of metal The textured metal lock is enhanced by the sharp edges and smooth surface. Durability and safety. 99 hours: Up to 99 hours and 59 minutes. Once you set it up and start it up after the time runs out it will automatically unlock and turn on. Please arrange your time reasonably. EASY TO OPERATE: Samll LCD with backlight shows soft and clear unlock time 3 small buttons to set hour or minute, easy to use. Wide range of uses: Metal time padlocks can lock addictive items such as cell phones, cigarettes, snacks, drinks, perfect for kitchens, schools, gyms, and more. Small and lightweight, suitable for airports and travel. You can lock your important items anytime to protect your privacy. Improve sleep quality: reduce the time you spend looking at your phone, fall asleep earlier Improve sleep quality Enhance immunity and live a good life Control smoking: Limit smoking Reduce the number of cigarettes smoked per day Gradually extend the interval and develop good living habits. all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.