Samson wireless mic system - $50 (Morro Bay CA)

SamsonAir Line 77 Wireless QE Headset Microphone System.
Great shape.
$50, $300 new With the AH7 micro transmitter mounted to a sweat-resistant headset microphone, it can be used to transmit audio wirelessly to a PA system and/or a recording device (both available separately).
This system allows you to free yourself completely from cables and beltpacks.
It has a 300' operating range (line-of-sight) and is available in multiple channels.
The Qe condenser microphone is sweat-resistant for high-energy instructors and performers.
Other features include a power/low-battery LED indicator and an internal power switch.
In addition, the transmitter operates for up to eight hours using a single AAA battery.
An AC adapter and a 1/4 inch output cable for the receiver are also included.
Less • AAA battery lets you use this fitness headset up to eight hours conveniently • Bidirectional condenser microphone helps reduce unwanted distortion for clear two-way communication • LED indicator keeps you notified about the power status of this fitness headset