Lexar -Lexar USB2.0 Flash Drive E21 adopts to UDP technology, which makes our flash drive in such a mini size and transfer data faster than any other ordinary USB2.0 Jump Drive -Available in capacities 32GB and 64GB. -Features durable and rugged Zinc alloy metal casing and key-hole design -Wide device compatible with any devices with USB connectors can be accessed -Wide file format adaption to both Windows and Mac OS - Lexar Thumb Drive satisfies your portable demand anytime and anywhere. Specification 【Interface】USB2.0 【Technology】UDP 【Capacity】32GB/64GB 【Material】Zinc alloy 【Color】Metal Black Color 【Size】39.3*12.1*4.6mm 【Weight】4.4g 【Operating Temp】0° C - 60° C 【Storage Temp】-20° C - 85°C 【OS】Windows7/8/10/Vista/XP/Unix/2000/ME/NT Linux, 【Mac OS】Mac OS X 10.5 or above Package Included Lexar USB2.0 Flash Drive x 1 Attention: 1GB=1,000,000,000 bytes. Actual storage less. Note: Speeds based on internal testing. Actual performance may vary. x=150KB/s. Product appearance, performance, software offerings, and packaging may vary depending on ship date and available inventory. Actual usable memory capacity may vary. Warranty: 2 years for Lexar USB Flash Drive