Reliable material: our chimes for classroom are made of quality aluminum and natural cherry wood, which are exquisite and sturdy, not easy to break, fade and tear, they are suitable for both children and adults to use, and they are well packed in a paper box to avoid impact during transportation | Providing a long lasting sound: a single percussion of meditation bells can provide a lasting echo for about 10 seconds, and the crisp bell can help listeners to meditate, which is very suitable for prayer, yoga, oriental energy, mindfulness exercises and more | Classroom prompt bell: you can tap the hand chime for teachers gently, and the aluminum tube will give out a single tone energy prompt tone, which will generate gorgeous tones full of classrooms through rotational resonance, thus effectively attracting students' attention in class and meeting | Portable size: the frame of the chime for classroom measures approx. 6.5 inches long, about 1.38 inches wide and approx. 1.18 inches deep, and the mallet is about 7.56 inches long, the suitable size makes them portable to carry and store, ideal for class, camping and many other outdoor activities | Multiple uses: our calming chimes can also serve as practical tools for children to learn how to play percussion instruments in early childhood, you can also use the bell to calm your friends down and even train your pets' reflexes