We tested the SP100 with our Motorola V600. Since no installation in the car is necessary, we had no problem pairing the devices, and we established a connection in just a few seconds. Audio quality was very good overall in both the car and the office. We enjoyed full volume and could hear our callers quite clearly. To them, we occasionally sounded a bit muffled, but it was nothing that was especially troublesome. Jabra promises 12 hours of continuous talk time and up to 20 days of standby time on a single charge. Jabra conveniently includes both a car and standard charger in the box, so we never had to worry about a low battery.