La Crosse Technology Marcella 21 in. Atomic Wall Clock — Hammered Bronze, Weather-Resistant with Temp & Humidity

The La Crosse Technology 21 in. Marcella Metal Atomic Wall Clock is a weather-resistant, hammered-bronze analog clock that automatically syncs to the WWVB atomic signal and is sized for clear viewing across large rooms or covered outdoor spaces.

Designed for homeowners who want a striking focal point with reliable timekeeping, the Marcella 21-inch clock combines a textured metal frame with atomic accuracy and integrated environmental sensing. Its 21-inch diameter and high-torque movement make the face easy to read from a distance, while the weather-resistant construction allows placement on a living room wall, covered porch, or patio. The Marcella also supports four time zones and adjusts for Daylight Saving Time automatically, reducing the need for manual resets.

How does the Marcella clock keep time accurate without manual setting?

The Marcella receives the WWVB radio signal from Fort Collins, CO, and automatically updates the clock to the correct time. That means you don’t have to reset it after power interruptions or seasonal clock changes. The clock can be switched among four time zones and will apply Daylight Saving adjustments when the signal permits.

• Automatic synchronization with WWVB atomic time signal.
• Selectable for 4 time zones to match regional settings.
• Automatic Daylight Saving Time updates when reception is available.
• High-torque movement ensures accurate hand positioning on a large dial.

Is the Marcella suitable for outdoor use and variable climates?

The Marcella’s hammered metal frame and weather-resistant design let it be displayed in covered outdoor areas like porches and decks. Although built to withstand outdoor-adjacent conditions, it is intended for covered spaces rather than fully exposed locations to protect the movement and battery compartment. Integrated gauges also provide local temperature and humidity readings for quick environmental awareness.

• Durable hammered-metal frame with bronze finish for corrosion resistance.
• Constructed for covered outdoor placement—avoid full exposure to rain and direct weather.
• Includes temperature and humidity indicators for convenient local measurements.
• Large dial remains legible from a distance in living rooms or patios.

What powers the clock and how long will it run between batteries?

The Marcella operates using standard AA alkaline batteries and offers an optional extended-compartment configuration to prolong battery life. Under typical conditions, the clock can operate for up to five years on a quality set of three AA batteries, reducing maintenance and the frequency of replacements. This helps ensure continuous display and fewer interruptions to the atomic synchronization routine.

• Runs on three AA alkaline batteries (standard operation).
• Optional extra battery compartment available to extend life up to five years.
• Energy-efficient high-torque movement designed for large clock faces.
• Long battery life reduces the need for frequent servicing or replacement.

How does the Marcella complement interior design and large spaces?

The 21-inch hammered bronze frame creates a bold, textured statement suitable for living rooms, family rooms, kitchens, or covered outdoor seating areas. The classic analog face and substantial size improve visibility and contribute a decorative, timeless look that pairs with traditional and transitional décor schemes. The bronze finish and textured metal add tactile interest and reflect ambient light for an attractive focal point.

• 21-inch diameter provides strong visual presence on larger walls.
• Hammered bronze finish adds warmth and artisanal texture to interiors.
• Analog styling blends with traditional and contemporary furnishings.
• Large numerals and high-torque hands ensure readability from across the room.

Who is this for? The La Crosse Technology Marcella 21-inch Atomic Wall Clock is ideal for anyone who wants a low-maintenance, large-format timepiece with automatic atomic updates and a decorative metal frame. Choose this clock if you need clear legibility across a wide space, a weather-ready option for covered outdoor areas, or a long-lasting battery solution backed by La Crosse Technology’s support and setup resources.