Best Calendar Display Desk Shelf Clocks in 2026

Extra-large, easy to read digits to assist those suffering from memory loss and/or labor with abbreviated words

Adjustable backlight (Hi/lo/off) using included AC adapter or battery operated on-demand use

Simple operation - set time zone and clock automatically adjusts time & calendar to Atomic signal; accurate to the second

Acctim Radio Controlled (UK & Ireland only) wall clock. Self setting, receiving absolute Atomic accuracy and adjusting automatically to seasonal time changes

Acctim Smartlite Technology - Innovative technology, exclusively at Acctim. Smartlite ; illuminates your display for easy night-time viewing and guarantees alkaline battery life of at least one year

Multi-function display showing time, calendar and indoor temperature

Atomic Accuracy: The Atomic clock has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

Displays Indoor Temperature and Indoor Humidity

Easy to Read 1.65” Tall LCD Time Display - Easy to See, Easy to Use, Easy to Set up - Use as either a wall clock, or as a desk clock with integrated stand. Perfect for anyplace in your home.

ATOMIC DESK CLOCK - Marathon's Atomic Desk Clock is self setting/adjusting using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in North America).

LARGE DISPLAY - The large, highly legible display includes a button-activated amber backlight.

MULTIPLE MODES - This clock not only has the features you’d expect (time, day & date), it also has indoor temperature, humidity, and a heat & comfort index. It’s perfect for an office setting where indoor conditions can be linked to productivity.

ATOMIC DESK CLOCK - Marathon's Atomic Desk Clock is self setting/adjusting using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in North America).

LARGE DISPLAY - The large, highly legible display includes a button-activated amber backlight.

MULTIPLE MODES - This clock not only has the features you’d expect (time, day & date), it also has indoor temperature, humidity, and a heat & comfort index. It’s perfect for an office setting where indoor conditions can be linked to productivity.

Size: 17.5 x 12.8 x 3.3 inches (44.7 x 32.6 x 8.4 cm); Weight: 5.5 lbs (2

Power supply: 2 x AA alkaline batteries (sold separately)

Second hand: Step second hand

Product Size: 7.2 x 10.2 x 2.8 inches (18.3 x 25.8 x 7.2

Material: Wood frame; MDF dark brown wood grain pattern; Dark brown wood coating; Front: Glass

Country of Origin: China

Atomic Alarm Clock - The Atomic Clock has a built in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute of Standards and Technology (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within on second as it receives daily WWVB updates.

Wall Mountable and Table Top Use - The clock may be hung on the wall using the hang hole at the back of the clock or displayed on your nightstand by pulling out the backstand. 3 x AAA batteries Needed (not included).

Easy to Use ANYWHERE you Need a clock – The Sharp SPC538P has easy set top button controls for simple operation. Battery operated (no cords) allows it to be used anywhere you need a clock!