About this item High-speed: Hugolog ro SD up to 95MB/s & 38MB/s read & write speeds respectively. (performance may vary based on host device, interface, usage conditions, and other factors) U3,C10,V30 support smooth as well as continuous shooting and Full HD video (1080P) recording. For apps, A1 (App 1) performance helps not only run faster by ro SDHC , but also save devices' storage space memory. (TF ’s actual performance will have some discrepancy due to difference of hardware/ platform.) Hugolog 64GB ro SD UHS-I Memory supports up to 1.5 hours 4K UHD videos recording, up to 5 hours full HD videos recording, 7,000 photos, 2,500 songs. (1GB=1,000,000,000 bytes. Due to different capacity algorithms and partial capacity are used for system files, management and performance optimization, so the actual available capacity may be less than the identifying capacity.) Ideal for Android smartphone, tablet, , dash camera, camcorder, high-res photos, gaming, music, DSLR's, driving recorder, digital SLR camera, surveillance camera, sport camera, Bluetooth speaker, VR, computer and laptop. Hugolog TF is compatible with all roSD and wide application of full-size SD if you have suitable SD adapters, such as compatible with Galaxy, compatible with Huawei, compatible with Xiaomi, Redmi, compatible with Vivo, compatible with realme, compatible with OPPO, Reno, compatible with Nintendo Switch, Fire Tablet, 3DS, DJI. Reliable & Durable: Shockproof, temperature-proof(32°F -158°F), waterproof(IPX7), and X-ray-proof.