Sky Viper Quadcopter Toy Vehicle for $44.10 shipped. Here is a screenshot for your reference. It measures 16″ diagonal (blade-to-blade), and has a 2.4GHz remote with rechargeable battery(500 mAh) and AC adapter. It also has 3 difficulty modes from beginner to advanced and 2 bodies with indoor foam EP body and outdoor vacuform stunt body. Most places have it for about $69.