It uses a newly developed 2-speed planetary gearbox for powerful screwdriving and drilling applications in wood and metal, and impact drilling in masonry. At 187mm it has the shortest design in its class for optimum handling, especially when performing drilling and screwdriving applications overhead and in tight spaces. It is fitted with a professional quality 10mm Auto-Lock drill chuck. Has Bosch Electronic Cell Protection (ECP) which protects the battery against overload, overheating and deep discharge. Integrated LED light for illuminating the work area, even in dark places and a practical belt clip keeps the tool within reach at all times.