●2.4GHz FHSS4/FHSS3 Spread Spectrum System 4CH●Super Response (SSR) Mode-Compatible●Waterproof (IPX4) Frequency 2.4GHz FHSS4 / FHSS3 Channel 4CH Nominal Input Voltage 3.7-7.4V Dimensions 21.4x27.6x29.4mm Weight 10.7g Compatible radio M12S, M12, EXZES ZZ, EXZES Z, M11X, EXZES X, MT-4S, MT-4,MT-S, MX-3X, GEMINI X [NOTE ABOUT USE WITH RECEIVER…