Powerstate brushless motor: increased cutting speed and power thanks to the toughest applications REDLINK Plus Intelligence: the most advanced wireless power tool electronics system; delivers optimized performance and overload protection using total communication between tool, battery and charger Redlithium battery technology: superior package construction, electronics and performance provide more work per charge and more work than any battery on the market One-handed design provides superior control and versatility over standard reciprocating saws 2.2 cm. Stroke length removes more material with each stroke, resulting in faster cuts. The swivel shoe provides constant contact with the workpiece resulting in smoother cuts with less buckling and vibration. Redlink Plus intelligence and Powerstate brushless motor combine to provide up to 3x longer life than competing one-handed recipes