La Crosse Technology atomic analog wall clock 10-inch Silver — radio-controlled, 4 U.S. time zones

The La Crosse Technology WT-3102S is a 10-inch radio-controlled analog wall clock that automatically syncs to the U.S. atomic time signal for accurate, low-maintenance timekeeping.

Designed for home or office walls, this silver-framed analog clock combines a clean, contemporary dial with automatic radio synchronization to the United States Atomic Clock. It receives a 60 kHz time signal and updates seconds, minutes, and hours, while offering manual-setting options and four U.S. time zone selections. The flat lens and chrome-colored plastic frame give it a modern profile that fits kitchens, classrooms, reception areas, and conference rooms.

How does the atomic synchronization work and how accurate is it?

The clock contains a built-in antenna that receives longwave time signals from the national atomic clock transmitter. Once the signal is acquired, the mechanism updates the displayed time to within seconds and keeps itself synchronized on a regular schedule.

• Receives 60 kHz radio time signal from the U.S. atomic source up to about 2,000 miles.
• Automatically updates hour, minute, and second without manual input.
• Maintains accuracy over time with routine radio-controlled resets.

What if I need to adjust time zones or disable automatic changes for Daylight Saving Time?

The WT-3102S offers four distinct U.S. time zone settings selectable via buttons on the back. There is also an on/off option for Daylight Saving Time so you can prevent automatic jumps if needed, or use the manual set for custom offsets.

• Four time zone buttons let you pick Eastern, Central, Mountain, or Pacific settings.
• Daylight Saving Time can be enabled or disabled with the dedicated option.
• Manual set/reset button available for custom offsets or when outside signal range.

What are the physical specs and power requirements?

This model presents a 7-1/4-inch readable dial inside a 10-inch diameter body and a low-profile 1-2/3-inch depth. It runs on a single AA alkaline battery (not included), and the flat lens protects the face from dust while keeping numerals easy to read.

• Overall diameter: 10 inches; face diameter: 7-1/4 inches; depth: 1-2/3 inches.
• Requires 1 AA alkaline battery (sold separately) for approximately one year of operation.
• Lightweight chrome-colored plastic frame with black inner trim and flat protective lens.

How should I position the clock for best signal reception?

Place the clock on an interior wall away from computers, wireless routers, or other electronic devices that can interfere with longwave reception. Initial synchronization may take longer; after the first full day the clock should receive regular updates without difficulty.

• Avoid mounting directly above or next to large electronic equipment or metal shelving.
• Interior walls facing less electronic noise typically improve initial acquisition times.
• Use the manual reset if you move the clock or are outside the transmitter’s effective range.

Who this is for: The La Crosse WT-3102S suits anyone who wants a classic analog display with modern automatic timekeeping—ideal for homeowners, small business owners, classrooms, and offices that value a clean look and low-maintenance accuracy. If you prefer an analog face but want the convenience of radio synchronization and simple timezone control, this compact silver clock is a practical choice.