Brushless motor: Brushless motor technology delivers 50% longer runtime, 25% more power and 10 times longer motor life time External rotor motor: When the motors speed at the same time, outer-rotor brushless motor, whose length of the core is longer, provides greater power than inner-rotor brushless motor. Your working efficiency can be notably improved. Lightweight design: The bare weight of the machine is less than 2.9 kg. Plastic upper guard and transparent lower guard are specially designed to lighten your load and facilitate your use. Soft grip: Rubber over-mould grip provides comfort and convenience. The tool can be operated with ease and can hardly drop from your hands. Easy blade change: Just push the spindle lock button, then you can change blades in seconds. And the lock switch can prevent accidental starting and increase safety during use., Weight: 6.393405598 Pounds, Manufacturer: WORX