BIWIN MS100 V30 UHS-I microSDXC Memory Card

The BIWIN MS100 is a microSDXC card that leads with a capture-oriented spec sheet rather than a broad feature list. Its headline number is a read speed of up to 100MB/s, paired with a 64GB SDXC capacity and the UHS-I bus interface. What sets it apart in a crowded field is the pairing of U3 and V30 speed-class ratings, the shorthand that camera and drone owners look for when they need a card that can sustain 4K UHD recording rather than just handle occasional stills. It suits shooters who value knowing a card meets a defined performance floor over paying for capacity or interface tiers they will not use.

Physically it is a standard microSD card, so it drops into action cameras, dashcams, drones, handheld consoles, and phones that support expandable storage. The 64GB size is a middle-ground choice: roomy enough for a solid stretch of Full HD or 4K UHD footage, yet small enough to stay affordable and quick to offload between sessions. The ratings printed on the card do the heavy lifting for buyers. V30 points to steady write performance for video, while U3 and UHS-I confirm it lands in the performance class instead of the entry-level bracket. Because the source material specifies a read speed but not a matching write figure, anyone recording at very high bitrates should confirm the sustained write rate suits their device before committing.