Sharp Atomic Wall Clock with 4-Inch LCD, Wireless Outdoor Sensor — Battery Powered, Auto-Sync WWVB

This Sharp Atomic Clock combines a large, easy-to-read 4-inch time display with automatic atomic synchronization for accurate timekeeping without manual adjustments. It runs on batteries, includes a wireless outdoor sensor that transmits temperatures up to 100 ft, and offers both wall-mount and tabletop placement for flexible use around your home or office.

How does the clock keep time so precisely?

The clock contains a built-in receiver that picks up the WWVB radio time signal broadcast from the National Institute of Standards and Technology (NIST). It aligns itself with that atomic source each day so you avoid manual resetting for daylight saving or drift.

• Daily automatic synchronization with WWVB (NIST) broadcasts
• Always accurate to within one second after updates
• No internet connection required — uses radio time signal
• Battery-backed operation for placement flexibility

What information does the display show and is it easy to read?

The large 4-inch tall LCD digits prioritize hours and minutes, with seconds, indoor and outdoor temperatures, day of week, and a calendar also visible. The oversized numerals make the clock usable at a distance or for quick glances across a room.

• Jumbo 4" tall time digits for improved readability
• Separate readouts for indoor and wireless outdoor temperature
• Integrated calendar and weekday display for everyday planning
• Works as a wall clock or tabletop clock with included stand

How does the wireless outdoor sensor work and where can I place it?

The included wireless sensor measures outdoor temperature and sends the reading to the main clock unit using radio transmission. It is battery powered and designed for simple placement — no wiring or complex setup required.

• Wireless sensor included in the box (separate from clock)
• Transmits readings up to approximately 100 feet from the clock
• Sensor runs on 2 x AAA batteries; main clock uses 4 x AA batteries
• Easy mounting or free-standing placement outdoors or in a sheltered spot

How simple is installation and daily use?

Setup is straightforward: install batteries in both the clock and sensor, position the sensor within range, and allow the clock to receive its first WWVB update. After the initial sync, the unit maintains accurate time automatically and requires minimal day-to-day attention.

• Quick battery installation—no tools or wiring needed
• Use on a wall or on a desk with the integrated stand
• Automatic adjustments for daylight saving and daily time corrections
• Clear LCD legible from across a room for convenience

This Sharp Atomic Clock is ideal for anyone who wants accurate, maintenance-free timekeeping with clear visibility and simple outdoor temperature monitoring. It fits well in kitchens, living rooms, home offices, garages, or any space where a large, readable clock and temperature reference are helpful. If you prefer a plug-free solution and a clock that updates itself automatically, this model delivers reliable performance with easy placement and battery operation.