Metal
Metal casings offer a stable structure and strong resistance to drops and impacts. Some pure copper models even develop a natural protective oxide layer that prevents corrosion. They are resistant to deformation or cracking over long-term use and are ideal for settings where the clock is frequently moved or prone to accidental knocks, making them the most durable choice.
ABS Plastic
A common, budget-friendly material, ABS plastic offers good wear and corrosion resistance, maintaining its performance well under normal daily use. However, it has relatively poor resistance to strong impacts and is prone to cracking or breaking if hit hard, making it less durable than metal.
Wood
Solid wood or wood-veneer alarm clocks offer a warm, natural aesthetic but are sensitive to moisture and prone to warping due to temperature and humidity fluctuations. Their surfaces are also easily scratched by sharp objects, requiring extra care to prevent moisture damage and scratches; overall durability is moderate.
Acrylic
Acrylic is transparent and lightweight but has low surface hardness, making it prone to scratches. Visible wear and tear often develop over time, resulting in relatively poor durability.
In summary, if you prioritize long-term reliability and need a clock that can withstand drops and rough handling, a metal digital alarm clock is the best choice.

