12V LithiumTech Trans4mer 2in1 Jig & Recip Saw w 1 battery. The Rockwell RK2516K 12V Trans4mer 2in1 Jigsaw has the unique ability to convert to a recip-style saw in just seconds. Simply pull the lever and orient the cutting arm to any of 6 cutting positions. The LED light and dust blower work to keep the cut line well in sight. This handly little saw is lightweight, easy to use, and especially compact to fit in spaces that a standard jigsaw or recip saw may not. Don't let the compact size full you. The 12-volt Lithium battery is powerful and packs quite a punch.With Lithium Tech batteries, there is no memory effect so batteries can be charged any time unlike standard Ni-Cd batteries. The LED light illuminates work and flashes when the battery charge is low. The Rockwell Tans4former offers the versatility and flexibility to cut like a jigsaw or a small recip style saw with durability. To make it even easier, the Trans4mer accepts any standard t-shank jigsaw blades.