The number of haircut length options provided in the design of the clipper or the design of the nozzle. The more such options, the more versatile the clipper and the more cutting options it provides.
The width of the operating tool (blade) of the clipper. A wide blade is important for head hair trimmers, as it allows you to capture more hair in one pass and cuts faster. In turn, beard and mustache clippers use narrower knives, which is useful for fine work to give facial hair the desired shape.
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Stainless steel. The standout feature of stainless steel is its exceptional resistance to rusting. When the clipper or trimmer boasts a sealed casing, the stainless steel cutting head can be conveniently cleaned using water pressure. While stainless steel is common in lower-tier devices and its blades can endure high temperatures, they tend to lose sharpness relatively swiftly.
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Titanium. Titanium alloys showcase impressive durability against substantial mechanical strain. The titanium cutting edge adeptly manages hair of various thicknesses and densities, retaining its sharpness admirably. Tools equipped with a titanium blade are reliable for frequent usage, notably in beauty salons. However, the drawback lies in their notably steep expense.
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Ceramic. Ceramic offers remarkable strength; its blades remain cool and sharp over time. Machines or trimmers featuring ceramic blades effortlessly handle even the thickest hair, allowing for frequent and prolonged use. Interestingly, models with ceramic blades often come at a more affordable price compared to those with titanium blades. Nonetheless, fragility is a significant drawback of ceramics; these blades are susceptible to damage from impacts and falls. Clippers and trimmers that are equipped with a ceramic cutting part must be handled with extreme delicacy.
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Diamond. Diamond-coated blades have increased edge strength. Typically, these blades are based on steel, most often stainless, but thanks to diamond coating, the knife acquires higher reliability and durability. Of course, the presence of diamond coating on the blade significantly increases the cost of the device.
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Steel. Steel blades are the budget-friendly option. Steel performs effectively in devices used sporadically, mainly for home purposes. Although steel edges tend to lose sharpness relatively swiftly, their durability can be enhanced through the application of protective coatings like diamond, ceramic, or titanium. Clippers or trimmers with uncoated steel blades typically fall into the low-cost category.
— Graphite. Graphite coating is typical for stainless steel blades, it allows the blade to glide more easily through hair and skin and generally increases the efficiency and convenience of working with such a device. Most often, detachable trimmer blades are equipped with graphite coating.
