SPECIFICATIONSBrand Name: KFHIREWCapacity: Real CapacityCertification: CE,RoHSCustom Logo: laser engravedEncryption: NoHigh-concerned chemical: NoneInterface Type: USB 3.0Logo service: free custom logoMaterial: MetalModel Number: USB Flash DriveOrigin: Mainland ChinaPackage: YesPendrive: High SpeedProduct Type: Flash Disk,Normal,Multifunctional,Creative,flash disk,usb stick,CreativeUsb used for: wedding photography gift businesstesting software: each one pass H2testwusb stick: High Quality Dear Customers, Welcome to our store! please read before payment,thanks For Logo 1. free logo 2. After you placed the order and if you need logo, pls send your logo picture to my email: logo966@hotmail.com or Aliexpress message in time, we will make the logo according to your message. 3.We will make a logo draft or a sample for checking before make all. Feature: Support USB version 3.0 Hot Plug & Play Durable solid-state storage No external power is required 4.5V ~ 5.5V from USB port Support Win98/ME/2000/XP/Vista/7/Linux2.4 without device drive Support solution for Linux kernel version 2.4 or later version Compatible with USB 1.1/2.0 Operating Temp: -10 to +55Deg.C Storage Temp: -20 to +55Deg.C Life:>1 million times   Note: The display capacity and nominal capacity are different because the calculation methods are different. Manufacturer standard: 1GB=1,000MB / 1MB=1,000KB. Operation system standard: 1GB=1,024MB / 1MB=1,024KB. About Real Capacity: Please kindly note the memory about the capacity for the storage products About capacity:       128MB = approximately 115MB-125MB        256MB = approximately 230MB-250MB        512Mb = approximately 470MB-500MB        1GB = approximately 950MB-980MB        2GB = approximately 1.7G-1.9G        4GB = approximately 3.6GB-3.8GB        8GB = approximately 7.4GB-7.6GB        16GB = approximately 14GB -15GB        32GB = approximately 28GB -30GB        64GB = approximately 58GB -60GB          128GB = approximately 118.9GB -120.5GB       Warm Tips:       1. To avoid data loss or mechanical damage, do not power down your computer or unplug flash disk during transfer.       2. Please do not remove your USB flash drive when it is being used otherwise your data may loss.       3. After using USB flash drive, it is better to remove it as soon as possible. That will helps to extend its storage lifetime.       4. Please do not format your USB flash drive frequently, otherwise the USB will be damaged easily. picture show: - About Feedback and Rating - We will work with you to until you are satisfied. we sincerely hope that you can leave us a 5 star feedback. If, for any reason you are not satisfied with your purchasing, please contact us through "My Messages" or "Ask Seller Questions" . Thanks :) - Our working schedule - UNITED STATES : PM 6:00~AM 2:00 FRANCE: AM 2:00~ AM:10:00 UK: AM 1:00~9:00 SPAIN : AM 2:00~ AM:10:00 GERMANY : AM 2:00~ AM:10:00 AU: AM 12:00~ PM:8:00 Brazil: PM 10:00~AM 7:00 Russian Federation: AM 5:00~PM: 2:00 We have days off on Sunday and public holidays. We apologize for the late reply during the holidays. We can respond Emails within 24 hours, within 36 hours on Weekend :)