This is an item of stationery (paper or writing goods), or other small merchandise such as good-luck charms, mascot straps, et cetera.
Miku Hatsune, a mascot character for the Vocaloid singing synthesizer software, is ready to perform for you anytime you like! This adorable figure of Miku stands on a small music box (combined, both are about 12cm tall). The music box plays "Hoshi no Kakera." This game-prize item by Sega is a really unique collectible, and the perfect gift for any Miku fan! (And check out the "leek girl" version, too, linked below!)