Design of adjustable cutter head with USB charging for electric hair clipper hair and beard trimming

Ultra-sharp precision trimming blade, perfect for carving hairlines, sideburns and detailing beard outlines with clean crisp lines. USB universal rechargeable design, charge via power bank, laptop and car charger, ideal for home, salon and travel use. Equipped with 4 size limit combs (1.5/2/3/4cm), adjustable cutting lengths to meet diverse short hair & beard styling demands. Smart one-touch power button with cool backlight indicator, simple operation for beginners and professional barbers alike. Ergonomic slim lightweight body, comfortable to grip for long-time trimming without hand fatigue. Low noise stable motor, smooth cutting without pulling hair, gentle on scalp and facial skin.