【Efficient Brushless Motor】Brushless motors make the motor run cooler, more efficient, and more durable by reducing motor wear.Delivers 0-1,150 RPM and 0-5,100 BPM, 2.1 ft.lbs./2.8 Joules of impact energy for fast drilling in concrete, brick, wood, metal,masonry, wall. 【High-power battery and 3.0A super fast charger】The 4.0Ah battery uses electronic control to optimize battery energy usage and extend service life. Applicable to all Berserker lithium projects. Includes ultra-fast charger with protection, fully charged in just 1.5 hours. 【Easy to Operate】:Set tool to 4 mode operations of "Drilling Only", "Hammer with drilling" ,"Hammer Only" , "Chisel Angle Adjust" for multiple applications. The forward and reverse switch and variable transmission provide user maximum control and accuracy. 【Compact and ergonomic design】Weight only 7.2 lbs for portability, and compact size allows it to access into high and tight areas. 360°adjustable auxiliary handle,enhances your experience. 【Premium Accessories & Storage Case】20V Max Rotary Hammer x1, SDS-Plus Drill Bits x3, Point Chisel x1, Flat Chisel x1, High-capacity 4.0Ah Li-ion Battery x1, Super Fast 3.0A Charger x1, Carrying Plastic Box x1, User manual x1, Premium Metal Depth Gauge x1. 20V Cordless 1-1/8" Rotary Hammer Drill