Serrator Blade Technology Carefully developed to provide you optimum blending performance that will stay sharp up to 12 times longer than standard blades*.* Lifetime guarantee on the blade only. For full details please see terms & conditions within the instruction booklet. Independently tested by CATRA using the International Standard Cutting Test System to ISO 8442.5 vs a standard plain edge blade. Terms & conditions apply.4 speed + 800W pulse For chopping & blending to suit food type 1.5 litre glass jug with 6 positions Perfect for left or right handed use