TOWER PRO OPTO 70A BRUSHLESS SPEED CONTROLLER 4-6 LIPON70A ESC OPTO,40gDimension: 60*38*12mm N-Series(High Voltage Plate) Weight: 40g Operation Limit: Max 70A/Continuous 10 min 60A Voltage Range: 13-25V Number of Batteries: LIPO 4-6 NIMH/Nicd 12-18 Performance: Apply to above 13V power supply /CELL Type/Number Set/ Brake Set/Timing Mode Set PWM SET Protective Functions: Automatically Select/4-6 Lipo, Protective Voltage is 13V/16V/19V respectively