This is the Hobbywing Platinum Pro V4 130HV 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
The innovative "duo" stacking structure allows all components on both sides of the printed circuit boards to quickly conduct heat to the aluminum 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-HV-130A OPTO 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.

Built-in Sparkproof Circuit
Built-in sparkproof circuit effectively eliminates sparks produced at the "powering-on" moment and prolongs the connectors lifespan.

Specifications:
Main Applications: 700-800 Class Helis
Governor: Internal
Built-in BEC: No
Continuous Current: 130A
Cell Count: 6-14S
Case: Aluminum Alloy Shell
Programming: LCD Program Box, WiFi Module, via Separate Program Port
Peak Current: 160A
Weight: 154g
Dimensions: 101x45.5x27mm
DEO Technology: Yes
Spark-Proof: Yes