The clock can automatically synchronize with the DCF signal. The standard movement contains a miniaturized radio receiver that searches for the low-frequency time signal broadcast from the DCF radio station. High-quality radio movement, simple design, easy to use, and energy efficient. Quality: the movement shell is made of sturdy and durable material for long-term use, and the clock hands are made of aluminum, which is lightweight, corrosion-resistant, and provides a decorative effect. Premium quartz clock movement with long lifetime. This kit is a good size replacement in terms of shaft and hand size, making it ideal for replacing broken clock mechanisms. Great for repairing, replacing, or creating a clock. Suitable for home clocks, craft clocks, frameless wall clocks, and other DIY timepiece projects. Perfect for DIY quartz wall clock replacements and movement part upgrades. Type: Non-ticking radio clock movement Features: Silent operation, no ticking sound Rated voltage: 1.5V Battery required: 1 x 1.5V AA carbon battery (not included) Dimensions: Movement size: 56 x 56 x 16mm, shaft length: 14mm, thread length: 6mm Color: Black Material: Plastic and aluminum Package Contents: 1 x Radio movement 5 x Clock hands 1 x Set of accessories Note: The package includes only the items listed above. Other items are not included. Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3cm.