So then bravo for logistics: time announced 4-5 weeks actually four days to cross half the planet. Product speak: unpacking the propellers are mounted anyhow, even on a beginner quadricopter, there are 4 propellers (yes), which are all different and each for a specific location on the quadricopter. Unpacking and pre-flight of mine, I identified that they were mounted anyhow facing the user instructions. Without this check, first flight = guaranteed crash! There has red propellers are mounted on the back and white for the front; and there are propeller type A and B as in red than white, not about to reverse. The letter A (or B) is engraved on the upper surface of the propeller very slightly oversize. To identify them more clearly, indelibly felt a sudden, it's not beautiful, but much more readable and it cancels the risk of confusion. same for the positions, a felt out the engine nacelles to identify red or white and A or B. Looking at the drone above the propeller plane is white At 2 hours, red B to 4 hours to 78 hours A red and white B 10 hours. Very laborious flight first put absolutely protective of propellers.
