Characteristics: 1. Each item comes with a distinct Manufacturing Part Number label on the inner packaging that verifies its qualification, which includes Part Number, Model Number, and inspection date details; 2. If you have any inquiries regarding the product, please provide us with the Manufacturing Part Number for verification, ensuring your profits are protected. Specifications: Material: Metal Color: Black Size: 4.5x3.5x1.9cm/1.77inchx1.38inchx0.75inch (LxWxH) Weight: 244 g