This is the Hobbywing Platinum Pro V4.1 200HV OPTO ESC, for use with 700-800 sized Helicopters.

One of a Kind Design
The elegant case is made from aluminum alloy material. Each cooling slot and its fin were carefully designed and arranged, and the case has gone through oxidation, coloring and edge-highlighting.

Innovative Heat Dissipation Structure
Power board dissipates heat via the aluminum upper & medial cases. Control board dissipates heat via venting holes in the medial case.

Excellent Motor Speed Governing
The high performance 32-bit processor, combined with advanced algorithm, makes the motor speed-governing excellent for different conditions. With the adjustable sensitivity of speed-governing, every pilot can find the most suitable settings for his helicopter.

Super Soft Start-Up
The Platinum HV200A makes the motor start extremely soft and avoids tail-drift issues. The start-up time is adjustable within 8 to 25 seconds. This will definitely create a perfect starting point for every flight.

Great Current Endurance
A high-quality and high-voltage MOSFET with a great current endurance guarantees the ESC's safety especially in a extremely high power demanding situation.

Specifications:
Main Applications: 700-800 Class Helis
Governor: Internal
Built-in BEC: NO
Continuous Current: 200A
Cell Count: 6-14S
Case: Aluminum Alloy Shell
Programming:
Peak Current: 300A
Weight: 325g
Dimensions: 106x50x34mm
DEO Technology: Yes
Spark-Proof: Yes
Programming: Separate port for ESC programming (this port is also the FAN port)
Parameter: You can program your ESC with a LCD program box and a programming cable or an Android/iOS smartphone, a WiFi Express*.