One handy feature with this hammer drill is that it's brushless. It runs on a rechargeable battery, so it's completely wireless.
From Amazon
WORX Nitro 18V (20V MAX) Cordless Impact Drill, PowerShare, Brushless Motor, 60Nm, 13mm Chuck, Variable Speed Control, LED Light, 2pcs 2.0 Ah Batteries Included, WX352
OnBuy
WORX WX352 18V (20V MAX) 60Nm Brushless Motor Cordless Combi Hammer Drill with x2 2.0Ah Batteries