This is the "E" Engine Launch Controller for Flying Model Rockets from Estes. Suitable for Ages 18 & Older. FEATURES: E Launch Controller is a must when launching "E" engine powered rockets Factory assembled and wired Includes safety key and 30" (9m) of launch cable Instructions and saftey code One year full warranty INCLUDES: 1 controller 1 safety key 1 30 ft (9m) launch cable REQUIRES: Adult Supervision 4 AA batteries (FUGP4304) COMMENTS: Due to small parts that could cause a choking hazard please keep away from children 3 years of age and younger For your safety and enjoyment, always follow the NAR Model Rocketry Safety Code while participating in any model rocketry activities sdw 10/29/01 ir/kh updated tlc 1/10/13