“This is a good product. It is well built, very stable, nice detail. I recommend using a 4000Pro battery, and changing the Landing Gear Springs. The original springs are way too stiff. I added a Freewing speaker and Amp from a FW P51, and fly FPV. Using a 4000Pro Battery, I did not have to balance the plane, even with the added speaker and 1100 battery to run the FPV and sound. Great pleasure to fly this bird FPV. Very fast and climbs very high quickly.”