The 
Weiss Schwarz Rose: Interspecies Reviewers booster box is a collectible card game product published by Bushiroad. The box contains packs of standard-sized trading cards based on the anime series Interspecies Reviewers (also known as Ijoushu Reviewers). 
Booster box contents
According to a fan-operated wiki for Weiss Schwarz, a standard booster box contains: 
10 booster packs: Each pack includes a random assortment of cards.
8 cards per pack: The cards in each pack are comprised of different rarity levels, with a typical breakdown of 4 Common (C), 2 Uncommon (U), 1 Rare (R), and 1 Climax (CR/CC). 
Featured cards
Series set: The box contains cards from the Interspecies Reviewers series, which can be used to build a "Neo-Standard" deck with other cards from the same series.
Holographic cards: Each booster pack is guaranteed to have at least one shiny, holographic card.
Sign cards: There is a chance to pull ultra-rare foil-embossed sign cards featuring autographs from the anime's voice cast. For the first edition, this includes an "Autograph Rare" (AGR) card autographed by Miyu Tomita, who voices the character Crim.
Assorted cards: The cards are randomly assorted, so there is no guarantee that a single box will contain all card types. 
Language and availability
Japanese release: Most listings for the Weiss Schwarz Rose: Interspecies Reviewers booster box specify that it contains Japanese-language cards, as it was manufactured in Japan.
Purchasing options: Boxes and individual cards can be found on online marketplaces like eBay and from specialty retailers.