Yes, you can save your progress on all games, including arcade games. You can also have multiple games opened simultaneously and the console will keep track of each game.

The battery last 5-7 hours depending on the game.

Screen: 3.5 inch IPS 640x480

Battery: 3000mAh Li Recharge

Charging: 5V 1.5A Type-C

Dimension: 4.25x3.09x0.87 inch

Weight: 0.37 lb