1,New USB flash drive 2,USB2.0,Hi-speed 3,Original flash,2GB,4GB, ... 8GB 3,Free customized logo 4,Free preloading datas 1),USB ... : OVER 10 years9),Pass CE,FCC and ROHS certifications ;10),USB power :4.5V-5.5V11),Working temperature:-40 °C ~ +70 ...