This is the HO Scale DCC Union Pacific EMD GP9 Diesel Locomotive with Dynamic Brakes (#173) by Bachmann®. Suitable for Ages 14 & Older. FEATURES: Digitally control speed, lighting, and direction Main-track programming 28-step speed control For use with all NMRA/NEM-compliant DCC systems All-wheel drive Die-cast chassis E-Z Mate® Mark II couplers (with metal coil springs) Compatible with conventional DC-powered layouts INCLUDES: One DCC Union Pacific EMD GP9 Diesel Locomotive with Dynamic Brakes (#173) SPECS: Scale: HO 1/87 tlh 12/21/10