A little update to this thread. I've been using the mobile FRS for about 1.5 years and absolutly love it. I picked up a second unit tonite as I couldn't argue with the price. In the same section they had a 2-way radio headset adapter on clearance for $2.97 (PN211890). It consists of a dual-jack adapter unit with PTT button, PTT/VOX setting and sensitivity control that plugs into the FRS handpiece and includes a 2.5mm adjustable boom in-ear mic. They still offer the earpiece alone as a phone acc. for $21.99. I've had it plugged into my cordless all nite