Includes: (1) Futaba Buddy Trainer Box (bare 4YF transmitter without battery, antenna, crystal) (1) Neck Strap (1) Square to Round Trainer Cord (the Square to Square version is available here) (1) USB RC Simulator Power Version w/ Software CD - Windows (XP,Vista,7)/Linux see here for more info. Tom's Note: This particular USB simulator cable will provide power to the buddybox for simulator functions, no batteries needed. Train with the simulator (virtual models) on your PC first, then with your instructor for real models. While training with the instructor, the instructor's radio will provide power for the buddybox. Will work with Instructor Radios with "round" type type trainer port. Including: Futaba Conquest FM, FG FM, 4VF, 6VA, 6VH, 6DA, 6YF, 6YG, 8U, 9Z PPM only: 6XA, 6XAs, 6XH, 6XHs, 7U Tower Hobbies: System 3000 4FM, 6FM Cirrus 900FM Hitec Focus 4, 6; Laser 4, 6; Flash 4, 4X, 5, 5X, Prism 7, 7X; Eclipse 7 Notes for Instructors Radio for use with the 4YF BuddyBox: Where applicable, set the student's radio type to PPM. For the Futaba 6X and 7U family radios, the instructor radio must use a PPM/FM receiver. For other Futaba PCM/PPM capable Radios, the instructor can use either PPM/FM or PCM receivers. Notes on Helicopter and Advanced Aircraft Training: Will work with the 8U, 9C, and other Radios with "FUNC MODE" (or equivalent). This mode will perform all special mixing at the instructor radio.