Extremely compact mini flash drive - Insightful UD9. It allows you to store and transfer data such as audio, image, video files. Equipped with a key ring hole. Wide compatibility: the product is compatible with most devices with a USB port available on the market. Extremely small size allows the product to be easily stored when not in use. A special hole allows you to attach a key ring and keep the product always close to you. Specification: USB protocol: USB2.0 Material: zinc alloy + ABS + UDP Size: 26.3 * 12.2 * 4.4mm Weight: 7g Write speed: 6-10 MB/s Read speed: 15-25 MB/s