PANASONIC EY78A1LS3T31 ROTARY HAMMER DRILL DRIVER WITH 3x42AH LIION BATTERIES SPECIAL EDITION p New design for improved balance Light weight and effective water protection Dual function Rotary Hammer or Drill Driver 5 stage torque clutch and pdrill positioning Electric speed control Electric brake Reversible Drill chuck SDS plus Bit adapter Uses new phighperformance 42Ah Liion battery pack Includes battery sensor to prevent overcharging over discharging Temperature sensor protects battery from overheating