Features: This compact electric eraser can erase small areas on artwork quickly and precisely. Strong decontamination, not easy to destroy paper. Moderate size suits hands perfectly, portable and comfortable to hold. Adopting internal electric motor which is low noisy and safe. Labor-saving and effective, perfect stationery for art students, teachers and those drawing lovers. Specification: Condition: 100% brand new Weight: 121g/4.3oz Battery capacity: 600MAH Charge Mode: USB charging Motor voltage: 3.7V Color: Pink, White, Blue (Optional) Package List: 1 x Electric Eraser 1 x USB Cable 2 x Plastic Clamp of Replacement Refills 16 x Replacement Refills Note: 1. The charging interface is the android port. Plug in the power adapter charger with USB or USB port. 2. When charging is normal, the signal light is normally blue. When the signal light is not on, it means charging is full. 1This compact electric eraser can erase small areas on artwork quickly and precisely. 2Uneasy to destroy paper with strong decontamination. 3Moderate size suits hands perfectly, portable and comfortable to hold. 4Adopting internal electric motor which is low noisy and safe. 5Labor-saving and effective, perfect stationery for art students, teachers and those drawing lovers.