This is an HO Scale Deluxe Power Pack from Model Power. FEATURES: For use with all trains and racecar sets that require controllable 12V DC. Includes AC tap off/heavy duty transformer. UL approved and circuit breaker protected. Sturdy black plastic construction. Forward and Reverse switch. Red lever that goes from STOP (0) to FAST (100) in increments of 20. INCLUDES: One HO Scale Deluxe Power Pack. REQUIRES: 120V AC Outlet (US Standard) Train or Racecar Set Adult Supervision SPECS: Length: 3-3/8" (86mm) Width: 3-1/2" (89mm) COMMENTS: Keep away from children under 3 years of age due to choking hazard. sdw 3/22/01