Material: High quality ABS material, simple and never outdated design. Tetris Mini Game Consoles are perfect choice for enjoying childhood fun. Powered by button batteries (included).Mini size: each portable game console with a hanging chain is about 4.2x4.6x1.8cm, a portable size that is appropriate for hand-holding and convenient for carrying and storing, which would not occupy much spaceVarious games included: these portable game console keychains can not only be a nice accessory to your keys, but also contain 26 kinds of interesting games, Including tank battles, racing, memory challenges, hamsters, Tetris, etc. Each game includes 99 difficulty levels, which can provide causal games for your leisure timeClassical design: the classical game keychains are lightweight enough to carry with ease, designed with a hanging key ring, making it easy to attach to your keys, schoolbag or pocket, a variety of colors to fit your personal styleNovel gift: the classical design of these brick game console keychains is proper for most people, coming with a variety of kinds of games, which can attract people's attention and win favors; You can take them as a small present for friends or family members