The Klein Electronics Blu-RSM Bluetooth Speaker Microphone has a 3 year warranty and a replaceable battery. This rugged speaker mic has volume control, earpiece port, and push-to-talk (PTT) button. Android and Apple iOS Compatible. 20 hour talk time. Long life replaceable battery. Works with Klein Electronics Blu-Lync parts. Works with Push-To-Talk Over Cellular (P.O.C.) Applications, including: AT&T EPTT, Kodiak PTT, Verizon Wireless, Zello, ESChat by SIA Corporation, grouptalk, and azetti networks.
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