1. Ultra-compact and nostalgic. 2. Use 1:1 high-definition 720*720LCD as the main vertical screen game series, such as airplane game consoles. 3. Double TF card independent system and game storage design, upgrade system without copying games. 4. Use high-performance quad-core CPU,FPS runs perfectly at 60HZ. 5. Support open source system, upgrade at will, and be compatible with mainstream 64-bit 3D simulators. Model:RGB30 System:Support a variety of open source linux Compatible games: Compatible with for MAME/N64/PS/CP3/NEOGEO/GBA/NES/SFC/MD/NDS and other simulators. Screen size:4.0 inch OCA full fit Screen resolution:720*720 CPU:ARM quad-core 1.8GHz high performance open source chip RAM:LPDDR4 1GB External storage:TF1-OS(Support 16GB-256GB) TF2-Game(Support 16GB-256GB) WIFI:Built-in WIFI 5G+Bluetooth Loudspeaker:Built-in 1W*2 cavity loudspeaker Battery:Built-in 4100mA li-polymer. Input power:5V-2A Maximum power consumption:5W Battery life:8 hours Charging time:2 hours Interface:TYPE-C fast charging interface, TV HD interface, OTG-USB interface, 3.5MM earphone interface. Colour:Yellow Material:ABS Package Contents: 1 x Retro Game Console Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.