Double Power Options - Rechargeable lithium battery plus USB power supply design provides uninterrupted use anywhere, reducing the need to stay near a power outlet. Smart Sharpening System - Intelligent induction technology enables automatic sharpening with no manual intervention, delivering a fast and clean result. Low Noise Sharpening - The motor system is optimized for smooth, quiet operation, minimizing noise during use. Compact Versatility - Compact design with practical features allows the sharpener to fit into desks, studios, classrooms, or other workspaces for convenient operation. Use scenarios - Classroom use: teachers can rely on USB power or battery power for continuous sharpening during lessons without interruptions. - On the move: students or artists can sharpen pencils anywhere using the rechargeable battery or a portable USB power source. - Focused work environments: in offices or studios, the quiet sharpening helps maintain concentration without disruption. Specifications and attributes - Power options: Rechargeable lithium battery and USB power supply design - Sharpening system: Smart induction for automatic, hands-free operation - Noise level: Low noise motor for a quieter sharpening experience - Design and footprint: Compact, versatile design suitable for diverse environments - Performance: Efficient sharpening with minimal manual input and smooth operation