microSDXC Class 10 UHS-I Combining next-generation Ultra High Speed Class 1 technology with extra large capacity, Transcend microSDXC UHS-I memory cards not only provide the best possible performance during a host of mobile activities but also enough storage space to carry an entire collection of personal media files. Size 11mm x 15mm x 1mm Op. Voltage 2.7V~3.6V Op. Temperature -25°C(-13°F) ~ 85°C(185°F) Durability 10,000 insertion/removal cycles Weight 0.4g Compatibility Ideal for smartphones and tablets