This is a HobbyEngine 1/12 scale ready-to-run (RTR) radio control (RC) crawler crane with a 27.095 MHz transmitter. Features: Ready to roll R/C tracked construction machine. Features multi-function digital proportional 27.095 MHz transmitter. Dimensions: 37.375″ long, 8.75″ wide, 37.75″ tall (max). Functions include forward-reverse, left-right steering, 360 degree body rotation, pivoting crane arm and working lift bucket with articulated jaws. Comes with all required batteries – 9V transmitter battery and rechargeable 7.2V receiver battery pack; plus AC battery charger. From the manufacturer: – Multi-Function Electric-Powered. Works Like The Real Thing. Frequency Provided: 27.095 MHz. Forward and Backward Action. Left and Right Steering. Body Rotates 360 Degree Freely. Long Operating Arm Move Up and Down. Bucket Lift Up and Down. Weathered Finish.