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Bluetooth Headset Compatibility for zumo 590 and 595
Garmin strives to maintain Bluetooth compatibility with the most popular motorcycle and truck headsets on the market. Currently, as long as the headset supports the hands-free profile and has a Bluetooth version of 1.1 or higher, it should be compatible, although it cannot be guaranteed.
Your device can be paired with two wireless headsets at a time. Only one headset can receive navigation prompts and phone calls. Both headsets can be used for multimedia audio.