Metal housing: This silent alarm clock is mainly made of metal. The surface of the metal housing, treated with baking paint, is smooth and burr-free, and feels comfortable. The baking paint process forms a durable coating, which reduces the risk of rust and has good anti-rust properties. The high hardness and hard texture of the metal make the housing less susceptible to damage and gives it a longer lifespan. Silent rotation: This product has a built-in quartz movement. The quartz movement has excellent accuracy and stability and uses energy more efficiently than traditional mechanical movements. The built-in movement is also a scanning, silent movement, ensuring a quiet sleeping and working environment when the alarm is running, so you can sleep and work comfortably. Stylish appearance: The product has a dark metal frame and a bright dial with harmonious color combinations. This simple color combination ensures that the product fits into a variety of styles. Whether it's a modern, industrial, or simple decor style, our alarm clock can be integrated harmoniously and forms a stylish decoration on the bedside table, adding a touch of sparkle to your bedroom. Easy to use: This battery-operated alarm clock requires only one carbon battery. It is quick and easy to use. This product has an alarm function. To use the alarm, simply set the alarm hand to the desired time. (Note: This product is not suitable for strong alkaline batteries or rechargeable batteries to prevent damage to the clockwork.) Practical tool: The diameter of the dial is 8.5 cm and the total height is 9 cm. Small and elegant, it is easy to carry and is a practical tool for the office, classroom, bedroom, bathroom, and when traveling. You can also give it to friends, family, colleagues, and neighbors. It makes a great birthday or Christmas gift, especially for teenagers and the elderly. Technical details Color: Black Dimensions: 8.5 x 3.81 x 9 cm Material: Metal Special function: Silent clock, alarm Weight: 130 g