Pyramid offers a variety of wireless analog clocks, including a line of hardwood clocks for high-tech performance with a more traditional look. Pyramid"s full line of wireless analog clocks can be set up quickly and easily. Pyramid uses the proven industry standard of using frequency-hopping technology to broadcast between 902 and 928MHz radio frequencies. This delivers a dependable wireless synchronized clock signal in any vertical market. The clocks are made from solid hardwood and are available in cherry, walnut, and oak. They feature easily viewable faces with years of maintenance-free service. Pyramid"s Wireless Analog Wall Clocks are ideal for facility renovation, retrofit design, and new construction applications. Since the clocks receive their radio time frequency from a Pyramid TimeTrax Sync Transmitter, they will stay on time virtually anywhere throughout your facility.With the central time source being captured from GPS, NTP and/or the facility"s internal network, it makes for a universal system almost anywhere. Easy implementation with no FCC license required.Additional Features: | High quality solid hardwood body construction designed for durability and long life| Automatic calibration| Powered by a Lithium "C" size battery (battery sold separately, Pyramid part# 42224)| Made in the USA