Just a quick followup to say that the replacement unit Jabra sent works much better than the BT100, although I find I need to charge the unit up after a day of being on even if I didn’t use it much. You can tell because the audio tones it generates (such as for a ring) begin to slow down and sound distorted. Since the regular headset that came with the T610 became unreliable, I only use the Bluetooth headset and for the most part it’s working for me again.
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