Shot speeds up to 90mb/s*, transfer speeds up to 170mb/s.* requires compatible devices capable of reaching such speeds. | *based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1mb=1,000,000 bytes. X = 150kb/sec. Capture uninterrupted video with uhs speed class 3 (u3) and video speed class 30 (v30)(2) | (2)uhs speed class 3 designates a performance option designed to support 4k uhd video recording with enabled uhs host devices. Uhs video speed class 30 (v30), sustained video capture rate of 30mb/s, designates a performance option designed to support real-time video recording with uhs enabled host devices.