WatchGuard Video's 2.4-GHz Digital Wireless Microphone, which features 40 dynamically selected channels, is available as an upgrade to the current digital in-car video system. The new microphone system is designed to mount against the ceiling, next to the overhead mounted camera system. In addition to an extended range of 1,000 feet, the new microphone promises up to six to eight hours of continuous talk time and 14 days of standby time. Although more powerful than the standard 900-MHz microphone, the new 2.4-GHz unit is about 60 percent smaller, measuring just over 2 inches in length. A high quality internal microphone is built-in to the belt pack transceiver eliminating the need for an officer to wear a lapel microphone.