NEW Upgraded Brushless Motor Dual Bearings for More Efficiency 7,200 RPM / 14,400 SPM Long Life NEW Upgraded Battery Up to 4 Hours of Runtime High-Performance Lithium Ion Large Capacity - 3,300 mAh All-Metal Housing/Knurled Barbell Grip Cord/Cordless Detent Hanging Hook NEW USB-C and Standard Cord Compatible Gold DLC/Titanium Standard Tooth T-Blade (FX707Z) High Hardness Lower Blade Temperature Zero-Gap Adjustable