Ripmax p-xtra sea sprint ESC
Hi Soft start means you can push the stick full forward and the revs builds up at a steady pace, a lot of the ripmax esc don't have bec, as far as l can remember, l switched the tranny on, centre the trims, plugged the esc and 4.8v into the res, you should get a steady light, press the button, you should be ready to go, if not let me know and l'll see if l can find the data sheet.
Dave