The HP mx330 Class 10 U3 microSD Flash Memory Cards are the perfect solution by which to expand on-board memory of mobile devices such as smartphones, tablets, action cameras, drones, and more, allowing you to free up space to enjoy more digital content, like apps, eBooks, photos, videos, music, and movies. The mx330 microSD Flash Memory Cards are rated Class 10, U3, with read speeds of up to 100MB/s, guaranteeing that you can quickly and easily store and share content between devices. What’s more, U3 technology is ideal for HD photography and 4K Ultra HD video recording, allowing you to capture high quality content on your action camera, drone, or other mobile device. Additionally, the HP mx330 microSD Flash Memory Cards are magnet proof, shock proof, temperature proof, waterproof and X-Ray proof. With the HP mx330 Class 10 U3 microSD Flash Memory Cards, you can rest assured that you are purchasing a high-quality product from a trusted brand, that resonates with all generations. Read Speed of up to 100MB/s A read speed of up to 100MB/s makes this card reliable for quick transfer of digital content so you can get right back to shooting more photos and videos. Why U3 Technology? U3 technology makes these powerful cards ideal for continuous burst mode HD photography and 4K Ultra HD video recording so you never miss the perfect shot. Burst Mode Photography Shooting a sporting event? A wedding? Nature shots? With burst mode photography, you are able to take more high-quality images in succession to achieve the perfect HD photo. 4K Ultra HD Video With the ability to shoot 4K Ultra HD videos, you can achieve clearer footage of whatever you are capturing on your HD enabled video camera. Included SD Adapter An SD adapter is included with these flash memory cards to make it backwards compatible with SD devices such as cameras, video cameras and computers that feature an SD slot.