Micro Sd Card. Disclosures: Approximate Usable Capacity is Based on 1 GB = 1,073,741,824 Bytes. Based on Internal Testing, Performance May Be Lower Depending on Host Device, Interface, Usage Conditions and Other Factors. 1 MB Per Second is Calculated As 1,000,000 Bytes Per Second. SPECIFICATIONS: Micro SD Speed Class: Class 10 Power Supply Voltage: 2.7 ~ 3.6 V (max) Compatible Standards: MicroSD Memory Card Ver. 3.00/Ver. 2.00 Standards Exterior Dimensions (L X W X T): 15.0 X 11.0 X 1.0 Mm Weight: About 0.4 G Dimensions: 0.59 X 0.043 X 0.03 (14.99 X 10.92 X 1.02 Mm) Package Contents: 1 X Sandisk Micro SD Card with Retail Package . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.