Smokes fast. I use them in my 5D Mark IV and find the burst speed these cards handle to be excellent. They also handle 4K with ease. The supported test speeds I'm seeing are very close to the published read and write speeds, which is more than I can say for most other cards, including the Lexar 633X SDHC cards I just bought.
Kingston microSDXC 64GB Class 10, V10, A1, UHS-I U1, R 100MB/s Memory Card, SD Adapter, 1 pc, Black
45 Review
Silicon Power Elite 64GB microSDXC 2-Pack Memory Card with Adapter for Nintendo Switch and Wyze Cam
57 Review
Smartphone ZTE Blade V10 Vita 2/32 GB, Dual nano SIM, graphite black
50 Review
32GB High-Speed Micro SDHC Card - Class 10 UHS-I Compatible Memory Card for SD Devices
63 Review
Apple AirPods Pro MagSafe RU Wireless Headphones, White
159 Review
Smartphone Samsung Galaxy A50 4/64 GB, 2 SIM, black
82 Review
Renewed Logitech G PRO X Wireless Lightspeed Gaming Headset with Blue VO!CE Mic Filter for Immersive Gaming Experience
122 Review
Logitech HD Webcam C270: Crisp 720p Widescreen Video Calling & Recording (960-000694), Lightweight and Portable at 3.15 lb.
192 Review