... 1),USB 2.0 & 1.1,High quality2),Fast Reading (10-15mbps) & writing(3-5 mbps)3),Support Hot plug and play ... 1-year guarantee.7),Can be repeated to wiped and written one millions times.8),Data retention: OVER 10 ... years9),Pass CE,FCC and ROHS certifications ;10),USB power :4.5V-5.5V11),Working temperature:- ... style, spherical button. Assembly is convenient, rich colors and comfortable