Warm tips: please do not remove the shrink to protect the pcb electronics components from impurites or metals which result in short circuit or esc burnt damage.

Advanced Features:
Dual ESC can reach 100A big current, give your board strong power
One PCBA board integrate two FSESC4.20 ’s function by internal CAN BUS circuit connection.
The mater and slave board connection can be switched On/Off
Delicate design in details for high quality assurance: add Anti-vibration silicon pad for screw heatsink and  heat-transfer pad
Preserve Bluetooth module and RF module connections for both master and slave board
Super small size and light weight with heatsink: 79mm*65mm*19mm(L*W*H), wight: 150g
 

Specs:
Hardware:V4.20
Firmware:Latest Version
Current:50A continuous/single, 100A continuous/dual , Instantaneous current 150A per single, total 300A for system instantaneous current.
Voltage: 8V-60V (Cells: 3-13S LiPo,Safe for 3S to 12S LiPo,Voltage spikes may not exceed 60V! )
ERPM:60000
BEC: 5V@1.5A
BEC type: Internal driver support 
Modes: DC, BLDC, FOC (sinusoidal)
Timing: Software calibration 
Cutoff Voltage: Programmable
Frequency: PWM input 
Governor: No
Programming card: No
Reverse: Yes
Motor wire: 12AWG 
Power cable: 12AWG
 The shipping package contains: 

1*Dual FSESC4.20 + Heatsink
2*VESC Sensor Wires
1*Micro USB 
1*Manual

this product have 2 months Warranty upon received, under proper use.