1. High-resolution display: The 3.5-inch IPS screen provides a resolution of 640x480, bringing excellent visual effects and providing an immersive gaming experience. 2. Dual joystick design, supporting dozens of mainstream simulators 3. RK3326, ARM 64bit quad-core 1.5Ghz professional game chip, can easily run large 2D and some 3D games 4. Built-in 2500MAH polymer battery, removable to see the battery status more intuitively. The battery adopts two-way protection, chargingdischarging is safer, and a full charge can play for 4 hours. 5. OTG adapter, through the adapter cable, it can be output synchronously on the large screen, and it can also be connected to the handle through the adapter cable to achieve two-player games. 6. This retro handheld game console is conveniently designed, can be easily put into your pocket, and provides up to 128GB of games for your entertainment anytime, anywhere. 7. Using a Linux operating system, smooth performance, a user-friendly operating system, can enhance the gaming experience. Parameters: 1. System: Open source Linux system 2. Built-in emulator: Support MAMEN64PS1NEOGEOFCSFCMDCPS1CPS2CPS3etc. 3. Screen size: 3.5-inch IPS OCA fully laminated MIPI screen 4. Resolution: 640 x 480 5. CPU: RK3326, ARM 64bit quad-core Cortex-A35 CPU up to 1.5GHz 6. GPU: Mali-G31MP2 (520MHz), support OpenGL ES 3.2 7. RAM: DDR3L, 1GB 8. TF card: support 16G-256G TF card expansion 9. Speaker: built-in 8W cavity speaker 10. Battery capacity: 2500mAh 11. Input power: 5V2A 12. Type-C charging interface: support 13. Type-C-OTG data port: supported 14. Headphones: standard 3.5mm interface Tip: Single card is for system and game on one memory card