Using these ZURU Robo Boats is super easy. Just put them in water, and they'll start moving like real speed boats. It's that simple! When it comes to the styles, remember that they're selected randomly when we send them out. If you want a specific style, leave a note in your order, but we can only do our best based on what's available. Since each boat is sold separately, if you want to collect all 4, you'll need to get them one by one. As for maintenance, keep them dry when not in use. And because they're for kids aged 5 and up, make sure younger kids are supervised while playing with them. Enjoy the exciting Robo Boat races!