The item is the newly released KX series screwdriver with the lightest weight and highest torque within the series.
Features include
1) Weight reduction with small size- equipped with a new type of motor and reduction device, which reduce the size and weight. The entire length is shortened by 42.5mm. The weight is reduced by 1%. The size and weight of the controller is reduced by 48.1% and 52.4% respectively(…)
via Nittos Seiko Begins to Sell High Torque Screw Drivers for Small Sized Screws