PrymeMAX™ Wireless


NEW BTH-550-MAX - Wireless Speaker Microphone with ROTARY volume control and built-in wireless PTT

Wireless Speaker Microphone with Rotary Volume Control. The BTH-550 is smaller and lighter than our BTH-600, but still just as weather-resistant. It has a ROTARY VOLUME CONTROL, which can be much easier to use, especially when wearing gloves. With more than 40-hours of talk time (80-hours typical) and greater than 30-days standby time, the BTH-550 is a real workhorse. The new PrymeMAX™ version works on phones, tablets (iOS and Android), plus many two-way radios that have built-in Bluetooth including ICOM, Kenwood, EFJ and BK (Except BKR series). The MAX is also compatible with all PrymeBLU radio adapters including the new V2 versions. Other features include a waterproof front-facing speaker, directional noise canceling microphone, heavy-duty clothing/belt clip that swivels 360°, and strategically-placed pairing and low-battery warning lights on top of the microphone, the NEW BTH-550 is super easy to use. This industrial-strength unit is multi-functional, featuring a broad-range ROTARY volume control, 3.5mm earphone jack, and rechargeable battery (comes with universal USB wall charger and cable). The BTH-550 can be paired with either Android or Apple tablets or cellphones. The side button activates PTT function while the top button controls normal phone functions (answer, hang-up, etc.)

Add an Earphone or Special Headset:


  • Wireless Remote Speaker Microphone with ROTARY VOLUME CONTROL
  • Great sounding transmit and receive audio using the latest in Bluetooth technology
  • Dust/weather/rain resistant to IP56 levels
  • Noise canceling microphone element
  • Typical operation range: 10 meters
  • Talk time: 40+ hours. Standby 30 days
  • Simple operation, rotary volume control with power switch, side mounted PTT switch (for radios), top mounted cellphone control switch, and 3.5 jack for optional headsets
  • NOTE: Price includes wall charger and mini USB charging cable (charging cable can also be used with most USB style charging adapters including car chargers)
  • OPTIONAL desktop charger part number P-CHA-DT1
Name: Version: Date: Size:
MANUAL-BTH-550-MAX.pdf N/A 2022-01-19 633 KB