[1] Item: USBBT6004 [2] Color: silver and blue [3] Size：2.32*0.75*0.39 Inches [4] Material: metal and ABS [5] Quantity: One piece [6] Capacity: USB2.0 32GB (MLC /TLC flash chip) [7] Write speed: 10MB/s [8] Read speed: 19MB/s [9] Package: poly [10] With a black small lanyard [11] Warranty: one year [12] Support windows7 / 8 / 10 / Vista / XP / 2000 / ME / NT Linux and Mac OS [13] We used H2 software to test all flash chips by copying machine.