This is the GWS ICS-400 F 15A Micro Electronic Speed Control. FEATURES: Auto cut off with BEC. Forward only. Throttle down/up safety start. Black aluminum heatsink. Accepts 5-8 cell batteries (6.0-9.6V) Futaba J Rx connector. Bare wire leads to battery.(pink+,green-) Bare wire leads to motor.(orange+,blue-) Instructions on back of header card. INCLUDES: One 15A Micro ESC REQUIRES: 400 motor SPECS: Auto-cut: 4.2V BEC: 5V/1.2A Continous Current: 15A Max Current: 25A Weight: 17g/.6oz LxWxH: 32mm X 21.5mm X 9mm 1.3" X .9" X .4" COMMENTS: A small key to help distinguish GWS Speed Controls ICS=Forward GS=Forward + Brake E=lower auto cutoff voltage of 3.2V (normal 4.2V) S=ON/OFF switch (no switch=auto on/Tx activated) F=Futaba J Rx plug J=J/R (Universal) Rx plug mcw 12/13/04 ir/jxs