ATOMIC-ally CORRECT – Utilizes automatic atomic timekeeping to sync to the WWVB signal for the most accurate time across four U.S. time zones and auto-adjusts for DST (customizable ON/OFF/AUTO) COMPACT & CONVENIENT – Cordless and lightweight, the 4-inch frame makes it easy to move about your cabin or wherever you decide to land this gear (we suggest nightstands, desks, or shelves) EASY-TO-READ – Bold, distinctive numbers, markings, and hands easily keep you on track, while the subtle night light is a tap away if you’re not on autopilot FRAME OF PREFERENCE – Blends classic aviation instrument panel design and modern versatility to fit a fleet of décor tastes. [A Brand You Can Trust] – Family-owned and operated since 1983, La Crosse Technology is the world leader in Atomic Time and Weather Instruments. Our products have unmatched support resources, including printed setup guides, helpful video tutorials, and lifetime access to our USA-based tech support team