Extremely compact mini flash drive - Insightful UD9. It allows you to store and transfer data, such as audio files, images, videos. Equipped with a keychain hole. Wide compatibility: the product is compatible with most USB port devices on the market. Extremely small size allows you to easily store the product when not in use. Special hole allows you to fasten the key fob and keep the memory close to you at all times. Specification: USB Protocol: USB2.0 Material: Zinc Alloy + ABS+UDP Size: 26.3 * 12.2 * 4.4mm Weight: 7g Write Speed: 6-10MB/s Read Speed: 15-25 MB/s