"Transcend’s microSDXC/SDHC 300S cards are the right choice! Compliant with the latest speed class, the cards boast excellent random read/write speed, perfect for retrieving small pieces of data from random locations and speeding app launch time.

Built for extremes

To deliver the best performance and stability, Transcend’s microSD memory cards are tested to withstand extreme conditions.

Waterproof: meet JIS IPX7 standards that can withstand immersion in 1 meter of water for up to 30 minutes.

Temperature proof: perform in temperature extremes from -25°C to 85°C.

Static proof: meet EMC IEC61000-4-2 standards and withstand static electricity.

X-ray proof: meet the ISO7816-1 standard and are immune to airport X-rays.

Shock proof: provide excellent shock, vibration, bending and twisting resistance."