This is a posable action figure from the Nendoroid series.
Here's a popular addition to Good Smile Company's Nendoroid series: Haruhi Suzumiya, done in Nendoron's signature style! Sculpted by Yukio Ageta of Max Factory in cooperation with Nendoron, 10cm Haruhi comes with two optional facial expressions, two optional hands, a pair of interchangeable arms, two arm bands ("Danchou" ["Brigade Leader"] and "Chou Kantoku" ["Super-Director"]), plus a base. Adorable! Please note that figures such as this are mass produced and as a result some inconsistencies in finish and painting may occur; these are not considered manufacturer's defects. If you absolutely must have perfection, prepare to do some touch-up work on your own.