[Album Info]Album Preview 2 normal versions: Signal and Change.
Each ver comes with version specific postcard (1), 4 cut photo (1 of 5), Sticker (1), Bookmark (1), Photocard frame (1), Group pc (1 of 3), Photocard (2 of 10).
Each ver is different so you'd have to buy 10 to collect everything (in theory)
PLVE ver (exclusively sold on Soundwave). You get a QR code which lets you download the album onto the PLVE app.
Group image card (1), Group photocard (1 of 2), Selfie photocard (2 of 10), Deco sticker (1 of 5), Standing photocard (1), Digital photocard on PLVE app (1 of 5)