1. Material: zinc alloy 2. Size: 37 x 36 x 8mm 3. Interface: USB 3.0 to Type-C + Micro USB + 8 Pin 4. Function: data transmission + charging adapter 5. Small and mini appearance, easy to carry 6. Aluminum alloy shell, wear-resistant and durable, fast heat dissipation 7. Plug and play, no need to install the program driver, easy to use