Specifications: Widely used in precision instruments, leather, shoes, clothing, food, medicines and household appliances. Can be used to protect the camera, lens, microscopes, telescopes, audio & video equipment, records, tapes, video tapes and computer diskettes, etc. Keeps them from mildew. The silica gel desiccant will turn to other color when it absorbed moisture from the air. You can heat it in microwave to 100℃ 120℃ for about 10 30 minutes, color will slowly change back after reactivation. Type: Desiccant Box Material: Silica Gel, Flexible Plastic Quantity: 1 Pc Features: Portable, Reusable, Color Changing, Dryer Size: 60mm x 55mm x 22mm/2.36" x 2.17" x 0.87" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1 x Desiccant Box(Other accessories are not included.)