The hair clipper GC542 features 24 cutting length settings. It has a stainless steel blade and a movable guide comb, allowing you to vary the cutting length from 1 to 24 mm. To adjust the cutting length, use the washer in the middle of the machine, which allows you to adjust by 1 mm at a time. The GC542 has a minimum cutting length of 0.8 mm when used without the guide comb. It also includes a thinning system to reduce hair volume. It is recommended to fully discharge and recharge the battery before using the device for the first time. The initial charging time is 12 hours, while subsequent charging takes about 8 hours. The operating time on a full charge is approximately 45 minutes. The corded-cordless function allows for use with or without a cord. The blade head is detachable, which, along with the included maintenance kit, simplifies daily cleaning. The kit includes a power adapter, a blade cleaning brush, and a small bottle of lubricant.