SPECIFICATIONSBrand Name: exuanckCertification: CE,FCC,RoHS,ULEncryption: NoHigh-concerned chemical: NoneInterface Type: USB 2.0Material: MetalModel Number: newOrigin: Mainland ChinaPackage: YesProduct Type: Flash Disk,Creativewelcome to xuan store !1:if your order over 20pcs , we can print your logo on the pen drive for free ,(logo fee 5usd)2:if you want logo , after order pls send your logo to my mail , also mark your order id in it . picture show: Operating Temperature: 32° F to 140° F (0° C to 60° C)Storage Temperature:  -4° F to 185° F (-25° C to 85° C)Power consumption: 4.5V - 5.5VSupport OS:  Desktop or notebook computer with USB portWindows 7, 8Window VistaWindow XP / 2000 / MEMacintosh Mac OS 9.0 or later and Mac OS 10.1 or later Speed may vary due to host hardware, software and usage. Read: Slowest 4MB/s, the fastest 25MB/s, Write:Slowest 2MB/s, the fastest 12MB/s. The actual available memory on the device is less than what is listed on the package. 1GB=1,000,000,000 Bytes. In OS system, it would be displayed as 1,000,000,000 Bytes/1024/1024/1024 = 0.93GB. A certain portion (1~3%) of the storage capacity might be reserved for firmware and maintenance use. 1:shipping within 72 hours after your payment. Feedbacks are highly valued. If you have any problem about our products, please contact us. We will try our best to solve it: 100% communication, 100% exchange, 100% re-send or 100% refund for you!