Battery not included Loud voice: The digital timer alarm buzzer beeps loudly in large spaces, allowing you to hear clearly in another room, making it a essential kitchen timer for safe cooking! Concealed hanging hole: there is a concealed hanging hole on the kitchen timer, you can hang a rope yourself, which makes it convenient for storage. When you don't use it, the hanging hole will also be well hidden and it won't affect its appearance. Improve work efficiency: These timers for cooking can give you a sense of convenience. emergency and help you improve your work efficiency. You can finish the work tasks assigned by your superiors on time, and thus you can develop a good habit. Easy to carry: The productivity timer is very compact and portable, or you can even carry a rope through the hanging hole and hang it on your backpack, which is convenient for you to take it with you anywhere for reading, studying and outdoor sports. Wide Usage: this magnetic timer is suitable for kitchen, housework, fitness, games, classrooms, meetings, workouts and other activities. Children and the elderly can easily operate it.