Special Order Drop Ship 16"" Battery Operated Wireless Analog Clock and Repeater Valcom Microprocessor Based Movement- Each Clock Acts as a Repeater- 915 - 928MHz Frequency-Hopping Technology- Receiving & Transmission Rate Every Four (4) Hours for Battery Operation- Receiving & Transmission Rate of Once a Minute for 110V or 24V- Internal Antenna- Automatic Calibration- Built-in Diagnostic Mode for Easy Maintenance-Quick Correction for Time Change (Max. Five (5) Minutes)- Ideal for Renovation Projects Using Existing Wiring, or for New Installations- Hour, Minute & Second Hands- Does Not Require Custom Back Box- Plug in Molex connectors (in 110VAC or 24VDC Model)- Smooth Surface Black ABS Case & Polycarbonate Crystal