This is the Castle Creations Sidewinder Speed Control. FEATURES: For 1/18 scale micro sport applications 3.5mm motor connectors, on-off switch, and universal receiver plug Castle Link compatible Transmitter can change Low voltage warning Brake Strength Lockout reverse mode Timing Adjustment Startup mode Reverse Mode INCLUDES: Castle Creations Sidewinder Electronic Speed Control REQUIRES: Installing in vehicle SPECS: Electronic Speed Control- Cells: 4-12 NiCd/NiMH, 2-3 cell LiPo Continuous: 30A Resistance: .0045 Ohms Brake: Proportional Reversible: Yes, with lockout Low Voltage Cut-off: Programmable Size: 0.95 x 1.7 x 0.4" (24x43x10mm) Weight: 0.9oz (24.5g) lm 05/16/08 ir/jxs