The magnet is not very strong on this plane which is not a big problem as the plane is very light. But the reason it's light is because it's mostly plastic (rather than an 'aluminum body' as advertised). But that wouldn't bother us. These were our issues with it: 1) Inaccuracy - never the same thing twice (compared to expensive photography) and don't trust that. 2) The liquid is not blue like the item pictured online but is a dark gold (not even the typical fluorescent green) which in some cases is very difficult to see. We returned for a refund and do not recommend it.