Nothing, everything is included.
Looking to learn to fly? With the assistance of a club instructor, the E-flite® Apprentice™ 15e RTF is the perfect trainer for learning the basics and beyond. The Apprentice is a 15-size high-wing trainer that comes with everything you need to go from buy to fly. This one-box purchase includes the full range DX5e Spektrum radio with the 2.4GHz interference-free technology, AR600 receiver, and a 3S 3200mAh 15C Li-Po battery and charger. There is no building required—just charge and install the included battery, mount the wing and tail, and fly.
The Apprentice is powered with a 15-size brushless outrunner providing excellent power and performance. This trainer has a flat-bottom wing and produces gentle flight characteristics. The Apprentice is made from durable, lightweight Z-Foam™, making it great for training and sport flying. Every beginner pilot experiences their share of bumps and bruises, so the Apprentice’s durable build and easily repairable construction ensures more opportunities for success. The Apprentice is the perfect training aircraft thanks to its gentle flight characteristics. This model is equipped with tricycle landing gear allowing better ground handling over tail-dragger aircraft. This landing gear setup is durable and will also allow takeoffs and landings on maintained grass runways. This is a high quality trainer with an excellent setup, taking the pilot from beginner to basic aerobatics all from this one-box purchase. Go from buy to fly with the Apprentice.