usbroway HM-213 Waterproof Floating Speaker/Microphone, Black

What the HM-213 is and who it serves

The HM-213 is a waterproof floating speaker microphone built for marine two-way radios. It lets boat operators keep the radio dry while speaking and listening from the helm or deck. The unit floats if dropped overboard, so retrieval is straightforward. It is not suited for users who need a headset-style microphone or a fixed-mount intercom.

Installing the HM-213 and common pitfalls

Connection is a simple plug into the radio's accessory jack; no tools or wiring are required. The coiled cord extends enough for normal movement but can snag on cleats or railings if not routed cleanly. The most frequent issue is debris in the connector causing intermittent audio, so rinse the plug with fresh water after salt exposure. The clip secures to a life-jacket strap or collar, yet it may slip on thick foul-weather gear.

Capacity and headroom of the HM-213

The microphone handles normal voice levels on open water without distortion, and the speaker remains audible over moderate engine noise. In heavy chop or high-wind conditions the speaker output can be overwhelmed, requiring the operator to hold the unit closer. The floating design supports the device's own weight only; it will not keep a heavier radio afloat if both go overboard together.