Colorful quicksand inside a cylindrical, easy-to-carry design. The interior shakes to reveal a bright shine, resembling spring petals or a starry night. The cylindrical shape is comfortable to grip and portable for on-the-go use. 5 Creative features - Electronic password lock pencil case with settable password. Fast USB charging capability and easy operation to unlock. - Erasable whiteboard surface for writing and doodling; wipe clean with a duster cloth and reuse. - Calculator with solar power recharge; no battery required; convenient for quick arithmetic. - Class schedule card helps with class preparation and daily planning. - Built-in mirror doubles as a cosmetic mirror for quick touch-ups. Multiple practical scenes - Suitable for student supplies, office supplies, travel box, and cosmetic storage box. Makes a versatile gift for girls and boys. Dirt-proof design - ABS plastic material is dirt-proof and easy to wipe clean, helping maintain a tidy appearance. Product dimensions and weight - 2.76 x 2.76 x 8.07 inches; Weight: 11.3 ounces Notes - Maintains original features: colorful quicksand, cylindrical design, password lock with settable password, USB charging, erasable whiteboard, solar-powered calculator, class schedule card, built-in mirror, ABS dirt-proof construction, and the listed dimensions and weight.