Description:  Large capacity lithium battery, long life, 10 intelligent protection quality cell.  Infinitely variable speed，The principle of automatic transmission of the car, the switch regulates the speed of the shaft and the torque of the machine.  Suitable for construction site shelves, maintenance, woodworking, etc.  The brushless motor does not generate sparks when it is working, and the motor does not wear.  360° secondary handle，The operation is smooth, and the operating posture can be adjusted at will to adapt to a variety of work needs.  Wireless operation，Getting rid of the 'line' system is easy，Lightweight and portable.  All-round electric hammer four functions in one,Hammer/Drill/Electric pick function switch freely.  Electric drill mode:Powerful drilling(Need to match drill chuck).  Electric hammer mode:Higher drilling efficiency than AC electric hammer.  Adjustment Funtion:Install flat chisel,adjustable direction.  Power Funtion:Water and electricity slotting ,handy.     Specifications:  Color: Black;  Speed: 0-6200rpm;  Function: 4 functions;  No-load speed: 0-1300r/min, 0-6200r/min;  Hammering frequency: 0-6200 ipm;  Battery capacity: 22900mah (one piece);  Battery: 388VF.     Package Included:  Type A-  1x Electric Rotary Hammer;  1x Storage box.  Type B-  1x Electric Rotary Hammer;  1x Li-ion battery;  1x Battery charger;  1x Manual;  1x Storage box.  Type C-  1x Electric Rotary Hammer;  2x Li-ion battery;  1x Battery charger;  1x Manual.