The T64S by Klein Labs offers 

• Wielding a 64mm Stainless Steel flat burr set designed for multipurpose grinding. Multiple alternative 64mm burr sets widely available from LeBrew and SSP which are compatible with the T64
• Adjustable RPM with LCD display dial with range 900-1900 rpm
• UK based warranty - We offer a 2 year warranty on all Klein Labs grinders with issues fixed in-house at our UK-based centre meaning you don't need to contact or deal with any overseas parties:

Sigma Coffee UK is an official retailer for Klein Labs.

Note: T64 and T64S are interchangeable terms

Product information:

Klein Labs T64 Single Dose Electric Coffee Grinder

*Additional Burrs are not pre-installed