It's junk. The strobe works with the α57, and I confirmed it flashes, but the button response feels a little sluggish. The lens has mold and clouding. It's for practicing disassembly and cleaning. The camera's operation is unconfirmed. The grip has significant deterioration. The film has a date of 2017.10, which I'm not sure if it's the manufacturing date or expiration date. I opened it to check, and it was indeed unused.