Redefine everyday file transfers with speeds up to 300MB/s | Exceptionally compact USB flash drive for an unnoticeable, seamless fit, designed with a key ring to prevent loss | Reliable and secure storage for your photos, videos, music, and files. Duration time is 0.5ms | Safeguard your data backed by a 5 year limited warranty (Water proof, shock proof, magnet proof, temperature proof, x ray proof) | USB 3.1 flash drive with backwards compatibility (USB 3.0, USB 2.0). Operating Temperature-32?~140?. Non-operating Temperature-(-50?) ~158?