Concentration-friendly design Quiet and smooth sharpening minimizes distractions and creates a calm study or work environment. The optimized gear drive delivers consistent sharpening performance with low noise. Two charging options Integrated rechargeable battery and USB port enable uninterrupted sharpening by switching between portable power and stationary power, delivering constant performance with no delays. Creative and space-saving design Combines aesthetic styling with a compact footprint. The sharpener fits neatly into desks, shelves, or backpacks, offering practical functionality without compromising style. Intelligent sharpening system Automatic detection technology starts sharpening automatically when you insert a pencil, delivering a precise tip quickly without user input. Works with every pencil for a reliable writing experience. Use scenarios - In class or library study sessions, where quiet operation helps maintain focus. - At the desk in the office for continuous sharpening without waiting for power. - During travel or field work, where the built-in battery provides power on the go.