System: Open source Linux system Description: 1. Supports more than 20 simulators. 2. Technological shell, easy to carry. 3. Dual TF card independent system and game storage design, no need to copy games when upgrading the system. 4. Adopts high-performance quad-core CPU 5. Supports open source system. 6. Finely carved nostalgic appearance full of age. Screen size: 3.5-inch IPS full-fit screen Screen resolution: 640*480 CPU: Allwinner 133-ARM quad-core DDR3: 1GB Built-in cavity speaker: 1W Interface: TYPE-C charging, OTG-USB, vibration WIFI: Support external RTL8723BU, 8812AU, 8821CU Game: MAME/N64/PS/NEOGEO/NES/MD/NDS and other emulators Supported languages: Japanese, French, German, Italian, Spanish, Russian, English, Polish, Greek, Korean, Dutch, Latin American Spanish, Brazilian Portuguese, Simplified Chinese, Traditional Chinese External storage: TF1-OS 16GB-256GB TF2-GMAE 16GB-256GB Built-in lithium battery 3000mAh Input power 5V/2A Maximum power consumption 5W Battery life 6 hours Charging time 2 hours Color: black, gray, yellow, red Net weight: 207g Gross packaging: 336g Product size: 89MM*85MM*26.5MM Packaging size: 15.5*10.4*4.1cm Packing list: color box + host + charging cable + instruction manual + sticker Note: This product does not have a TF card, the buyer needs to prepare a TF card