The Meiwa Denki Otamatone Colors Hello Kitty Ver. Tadpole Theremin Musical Toy is a collectible animation merchandise that combines the features of a tadpole and a theremin. It is a musical toy that produces sound when the user touches the tadpole's head and slides their fingers along the stem. The Hello Kitty version features a colorful design and is a collaboration between Meiwa Denki and Sanrio. This unique and playful item is perfect for music lovers and fans of Hello Kitty and animation art.