Standard Horizon RAM3+ Remote Station Microphone – White

Waterproof Speaker Mic Full sized microphone, equipped with an alligator type clip, Waterproof construction corresponds to JIS Grade 7 (1 m/30 min).

External Speaker – Black Features:4×4 inch external speaker, same as suppliedInput impedance: 4 ohmsMax input power: 7 Watts

MB-21 8 Watt VHF Extension Speaker – White This compact marine communications speaker includes a stainless steel mounting bracket and stainless steel grill.  These waterproof communication speakers can be mounted where you can hear your VHF radio. Features: Completely waterproof and corrosion-proof Features stainless steel grills, sturdy plastic frames, polypropylene speaker cones and Teflon-coated wires [...]

Flush Mount Kit MMB-84 Rear-mounted flush mount kit for fixed-mount radios.  Fits many current and older models.