Specs:

•  Hardware:V4.20
• Firmware: Latest Version
• Amps: 50A continuous,instantaneous current 150A
• Voltage: 8V-60V(Cells: 3-13S LiPo)
• BEC: 5V@1.5A
• BEC type: Internal driver support 
• Timing: Software calibration 
• Cutoff Voltage: Programmable
•  Frequency: PWM input 
•  Governor: No
• Weight: 76g
• PCB Size: 39x46x17.4mm
• Size:67x39x18.3mm(Include Heatsink)
• Programming card: No
• Reverse: Yes

The shipping package contains:

1*Mini FSECS4.20
1* Micro USB 
1* VESC Sensor Wire
1* Manual

Diagram