You might be giving a sentiment to our lives because of the different personality of the sound. Timbre is a brand with such thoughts that we want to create products that have functions like sound and sound that will hydrate your life. Size (W x H x D): Approx. 3.8 x 2.8 x 1.6 inches (98 x 70 x 40 mm); Weight: Approx. 10.6 oz (310 g); Material: Zinc die-cast/tail: Aluminum; Magnet neodymium φ0.6 x 0.2 inches (15 x 5 mm); 2 pieces; Not suitable for use as a design item that requires loud sound; Can be installed in such places: It has a built-in magnet, so it can be mounted directly on iron doors that are often used in apartments. Attach the included iron plate firstly on doors where magnets do not work on aluminum, wood, etc. (Use the included adhesive tape or wood screws. Tori, Tama is for doors only. Bo can be used on both doors and sliding doors.