... .Uses high impact ABS and Polycarbonate plastic housings for ruggedness. 5.Undergone comprehensive testing including high altitude performance, vibration, mechanical shock ... : IC-2GXAT, IC-2GXA, IC-2GA, IC-V21AT(Black), IC-F10, IC-F20, IC-V68, IC-U68, IC-M10, IC-W1 ... -Capacity for ICOM IC-S21, IC-W21, IC-M10, IC-F10, IC-F20