This is a mini amplifier from the 70s, commonly known as "Ishi-nan Desu." It uses genuine amplifier fabric and a speaker grille. The screws have been polished. Being an old item, there may be some crackling. Batteries cannot be used. It seems to have been made with care for a mini amplifier. A stone logo Stratocaster-shaped keychain (rare) is also included. It can actually be used, but it's also great for display. Please consider the item, referring to the enlarged photos, as it is a very old item.