Encryption:NoPackage:Yes Material:plastic Model Number:USB K1 Product Type:Flash Disk,Normal,Creative Interface Type:USB 2.0 Origin:Mainland China High Capacity Storage : This USB flash drive offers a high capacity of 128GB, perfect for storing large files, documents, multimedia content, and more. Ultra Thin Design : Its ultra-thin design makes it highly portable and easy to carry around in your pocket or bag. Waterproof Feature : With its waterproof feature, this pen drive ensures the safety of your data even in wet conditions. Strong Stability : The device guarantees strong stability, ensuring reliable performance and data integrity. Durable Material : Made from durable plastic material, this USB flash drive is designed to withstand daily wear and tear. Specifications: Read speed: 8MB -20MB/second Write speed: 4MB -8MB/second Capacity Capacity: Flash memory vendors are using decimal arithmetic:1MB = 1000KB, 1GB = 1000MB calculated and the operating system using binary arithmetic:1MB = 1024KB, 1GB = 1024MB; so there are some differences between display capacity and nominal capacity of flash memory products. 16GB=approximately 14GB-15GB 32GB=approximately 28GB-30GB 64GB=approximately 57GB-60GB 128GB=approximately 100GB-120GB USB 2.0 interface for higher speed and higher stability With micro-USB and Type-c connectors needs to be used on the phones that support OTG function Easy data transfer between computers, tablets and smart phones Environment Temperature: -40C - +70C Storage Temperature: -50C - +80C USB Service Voltage: 4.5V-5.5V Storage Lifetime: More than 5 years Use A-class chip, can be erased repeatedly for 100,0000 times Operating System: Win98/ME/2000/XP/ Vista/win7 /win8, Mac OS 9.X/Linux2.4 or above Compatible with most Android smart phones and tablets OTG functionality Portable, lightweight, premium metal waterproof Preloaded document viewing software for all major file formats USB connection:support Hot plug & Play. Easy to read and read in high speed ,No need drive/power supply only plug in. Notice 1. To avoid data loss or mechanical damage, DO NOT turn off the computer's power during transmission. 2. During use, do not remove the USB flash drive, otherwise the data may be lost. 3.After using the USB flash drive, it is better to safely eject the USB flash drive from the computer, which will help to extend its storage life. 4. Use FAT32 or exFAT to format the storage disk. Please do not format the USB flash drive frequently, otherwise the USB is easily damaged. 5. Your devices (such as TVs, car players, radios and other devices that need to recognize U disks) must have the latest USB driver to recognize U disks. Many older schools can only recognize U disks below 32G. 6. Please check if your smartphone / tablet supports OTG function before placing an order. 7. gifts. If there is a quality problem, you can request a replacement kit as a reminder in the next order. Due to disputes caused by gifts, we do not accept refunds. 8.If U disk can be recognized by Windows 7 and above computer, but fails to be recognized by other devices, then it is the problem regarding other device than U disk, please pay attention, thank you.