The Samsung Galaxy Pocket (aka S5300) is an Android smartphone manufactured by Samsung that was announced in March 2012. It bears the name "Pocket" because of its small dimensions. The handset is budget-oriented, sporting a relatively small 2.8-inch LCD display. Its specifications are similar to that of the Samsung Galaxy Y. Internally, it comes with 3 GB of storage which can be further expanded to up to 32 GB using a microSD card, and with 1200 mAh Li-ion battery.
Samsung Galaxy Pocket (Source: GSMArena)
Full device specifications can be found at e.g. GSMArena.