Compatible with models: Compatible with models: Motorola GM338 GM360 GM398 CDM750
GM140 GM160 GM340 GM360 GM380 GM640 GM680 GM1280 MTM700 MTM800 (not the E enhanced type) CDM750 CDM1250 CDM1550 CDM1550LS+ PRO3100 PRO5100 PRO7100 GM338LS GM339 GM399 MCX760 MCX780
Package Included: 1 x Knob