Ninjia Ultima Dual Stage Blender BL810-Brown Spins 4 stacked blades at a speed of 5,000 RPMs Total Crushing Technology spins 4 stacked blades at a speed of 5,000 RPMs to blast through tough ingredients like ice, frozen fruit and nuts. High Speed Cyclonic technology spins high speed blades at 24,000 RPMs to break down whole fruits and vegetables into a creamy consistency. Variable speed puts the control into your hands! Blends through ice, frozen fuit and nuts Easy to control variable speed