The Transcend USD300S is a 128GB microSDXC memory card designed to expand the storage of your mobile devices and cameras. It utilizes 3D NAND flash technology and a UHS-I interface to achieve read speeds of up to 100 MB/s and write speeds of up to 35 MB/s, which helps you transfer files quickly. With a V30 video speed class and U3 rating, this card handles full HD video recording smoothly without interruptions. Measuring just 11 x 15 x 1 mm and weighing a mere 0.4 g, the card is built to withstand demanding environments. It is engineered to be waterproof, shockproof, and resistant to X-rays, static, and extreme temperatures ranging from -25°C to 85°C. These protections make it a reliable choice for outdoor enthusiasts or those using devices in unpredictable conditions. The package includes a microSD to SD adapter, allowing you to easily move your data to a laptop or other compatible hardware.