Built with top-quality MLC NAND flash chips, Transcend's microSD/SDHC 410M memory cards can endure operating temperatures from -25°C to 85°C; and set a new standard for consistent, long-term performance even in the harshest conditions. Moreover, these cards offer high-speed data transfer rates to satisfy the demanding performance and reliability requirements of embedded systems, such as transportation, telecommunication, and IoT applications. Appearance Dimensions 11 mm x 15 mm x 1 mm (0.43" x 0.59" x 0.04") Form Factor microSD flash card Storage Flash Type MLC NAND flash Capacity 8 GB Operating Environment Operating Voltage 2.7V ~ 3.6V Drop Test 1.5m free fall Operating Temperature Standard Temp.-25°C (-13°F) ~ 85°C (185°F) Storage Temperature -40°C (-40°F) ~ 85°C (185°F) Humidity 0% ~ 95% Shock Acceleration: 490 m/s2 (standard holding time: 11 ms, semi-sine wave, velocity change: 3.44 m/s) Vibration (Operating) 20 G (peak-to-peak), 20 Hz ~ 2,000 Hz (frequency) Power Power Consumption (Max.) 0.72 watt(s) Performance Read Speed (Max.) Up to 95 MB/s Write Speed (Max.) Up to 50 MB/s Terabytes Written (TBW) Up to 86 TBW Note Speed may vary due to host hardware, software, usage, and storage capacity. Terabytes Written (TBW) expresses the endurance under the highest capacity.