This is the Futaba WTR-7 FASST Wireless Trainer System. FEATURES: Eliminates cumbersome trainer cords allowing instructor and student to stand up to 30" (9.1m) apart Plugs into square trainer port of instructor"s 72MHz, 50MHz or 2.4GHz transmitter and attaches to the back with included hook and loop material (student"s transmitter must be a 2.4GHz FASST system) One year limited warranty beginning at date of purchase INCLUDES: Futaba WTR-7 FASST Wireless Trainer System, Connection Cord, Mini Screwdriver, Hook and Loop Material and Instruction Sheet REQUIRES: Plugging into and programming through instructor"s transmitter SPECS: Operation Range: 30" (9.1m) Size: 0.89 x 1.59 x 0.52" (22.5 x 40.3 x 13.1mm) Weight: 0.29oz (8.1g) jxs 8/27/09 ir/jxs