Features: A500 Mini game extension pack, a plug and use game pack, which makes up for the shortage of 25 games that come with the machine. Built-in 4300+ retro games, most of which are ordered alphabetically, making it easy for players to find and playing. Built-in a variety of game topic, including racing games, shooting games, adventure, arcade games, strategy games and simulation games. With 50Hz or 60Hz refresh rate and 720P high-definition images output, you can enjoy a better game experience. Made of ABS material, more durable. Package Includes: 1 Piece Game Expansion Stick 1 Piece User Maunal 1 Piece Game Packing Box Specifications: Material: ABS Size: Approx. 7x2x1cm/2.76x0.79x0.39inch Model: A500 Mini Item Name: USB Game Stick Built-in Games: 4300+ Memory: 4GB note: In order to facilitate players to play multiplayer games, the Hub can be purchased separately, not included. Please allow 0-1cm error due to manual measurement, make sure you do not mind before you order. Please allow slight chromatic aberration due to different display resolutions.