How Long Does LEGO® Robotics Invention System Upgrade Kit (1.5) (3803) Take to Build?

A typical builder finishes LEGO® Robotics Invention System Upgrade Kit (1.5) (set 3803, 70 pieces) in about 15 minutes. Taking it slowly runs closer to 20 minutes; building at a fast pace, about 10 minutes.

PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.