Variable Speed, 28Mm Cutting Depth, Spindle Lock Button, 22Mm Spindle Size, 125Mm Disc Diameter, 10000 Rpm, Brushless Motor, Ergonomic Handle, 24V High Power Interchangeable Battery System, Greenworks 24V Lithium-Ion Battery Delivers Fade-Free Power With No Memory Loss After Charging. 45 Minutes Full Charge Time & An 80% Charge Taking Only 25 Minutes. Complete With An Led ‘Fuel’ Indicator, You Always Know How Much Power You Have Left.