Racerstar RS20Ax4 V2 20A BB2 48MHz Blheli_S 2-4S Opto Oneshot42 Multishot 4 in 1 ESC for FPV RacerSpecification:Brand Name: RacerstarModel: RS20Ax4 V2Item Name: 20A BB2 48MHz Blheli_S 2-4S Opto Oneshot42 Multishot 4 in 1 ESCInput Voltage: 2-4SCon.Current:20APeak Current(10s):25ABEC:NOProgramming :YESInstalling Distance: 30mmWeight:19gSize(PCB):36x36mmFeatures:-with Blheli_S firmware-4 in 1 ESC、 more easier to install-with 48MHz BB2 Clip-Support oneshot42 multishot-Small size and light weightPackage Included:1x 20A V2 4 in 1 ESC1x Cable1x Screw bag1x Manual