Kingston Technology USB microSD Reader (red), 3.8 g, 0 - 60 °C, -40 - 85 °C, 3.5 MB/s, 13 MB/s, 32.89 x 15.3 x 7.66 mm Kingston Technology USB microSD Reader (red). Weight: 3.8 g. Write speed: 3.5 MB/s, Read speed: 13 MB/s. Dimensions (WxDxH): 32.89 x 15.3 x 7.66 mm