Time Machines Precision Digital WiFi Clock 2.5&rdquo; x 6 Red Digits, Black Case Large Digital Display - 6 Red Digits No Batteries - Powered with 12VDC Power Supply (Included), 5 ft cable 4 inch, 2.4GHz Dipole External Antenna (Included), 2.5 ft cable Displays Legal Time from any SNTP Server 12 or 24 Hour Format, Count Up/Down Timer