Item is as described. It is a high quality product. It has different functions for aircraft and heli options. It comes with heli (elf) throttle setup as default. If you want to use it for airplane or different rc model, you need to get a suitabable programing box like Hobbywing multifunctional box. Build in BEC power is good. ESC is coming with a fan for optional use which is directly driven by ESC. (In the pictures it is mounted on esc but normally it is coming in the box dismounted). I tested it with a 5065 brushless motor up to 24v/40amps (CNC Spindle), it did not get any warm after 4-5 minutes. May be i can make additional comment after testing with a high power rate setup.
Fast shipping, excellent ESC for a 500-550 helicopter. Nice!
Yanwen logistic service is the best for receiving on time the parcels -with CAINAO tre shipments are very slow and it tools more than two time that with Yanwen to arrive in Italy from China