The Volas Mini USB Rechargeable Portable Juicer Cup listing says high-speed 6-blade blending at 18,000 RPM, USB rechargeable use, a 400ml compact cup, food-safe materials and use for smoothies, shakes and fresh juices. There is one default variant.
Those figures are what the page publishes. Charge time and a blade-steel grade are not listed. The first photo is a bottle with a cream base and a loop lid.
See the Volas juicer cup page.