i.Tech 305 i.Car Kit Bluetooth Specification: Version 2.1 + EDR Class 2 Operating Temperature: -10 to 65o C / 14 to 149o F Talk Time / Standby Time: Up to 8.0 Hrs / Up to 800 Hrs Dimensions: 3.11" (L) x 1.5" (W) x 0.50" (T) Weight: 3.17 ounces / 90 grams