So I can not agree with the previous review. After a little practice, reading the manual, about 5min trim is the thing like ne 1 in the air. Weight with battery are just over 300g. The really neat thing is when a 720p Cam is attached to it ... by the quiet flight movements are great shots possible. Even in the apartment are maneuvers, despite the size possible. Dimensions are 51cm x 60cm in diameter or 51xcm Build quality is absolutely fine, the cover is glued, but dissolves at some edges (Styrofoam). Here helps a small dab of glue and all the best. Have 61 paid directly at Amazon, very good price in my opinion.
As spare battery I use 2 the following: ASIN: B00HN3J6PW