This is the Axial AE-5 Waterproof ESC with Reverse. FEATURES 3S LiPo capable Settings can be easily switched between LiPo and NiMH batteries with a simple jumper Jumper 1 switches between LiPo and NiMH batteries Jumper 2 switches drag brake settings Waterproof design with waterproof on/off switch Laser etched heat sink INCLUDES Axial AE-5 ESC with Tamiya Style Battery Plug and Instruction Sheet SPECIFICATIONS Input Voltage: 2-3S LiPo, 5-9 cell NiMH/NiCd Motor Limit: 12T 2S, 18T 3S On Resistance FET: .002 Rated/Peak Current: 180A Braking Current: 90A BEC Voltage / A: 5.0V 2/0A peak PWM Frequency: 1KHz Dimensions: 1.8 x 1.3 x 1.1" (46.5 x 34 x 28.5mm) Weight: 2.5oz (70g)