Autonomy: After several game sessions (about 4), from 1 hour to 2 hours per session, the battery is half full. In total, the battery must cover each between 8-10 hours of play. It is serte shorter than batteries, but (for me), since nothing embarrassing can recharge the batteries at the end of each session game.
-> Positive Point: Design, finishes, two batteries, charging system
-> Downside: a little charging lights (too) strong
=> A very good product at a very reasonable price (acquired at 16), which filled all required functions! Convinced!