Targus PA870U V3 IR Foldable Keyboard for Dell X3 X5 X30 X50 x50v x51v; iPaq hx2410 hx2415, hx2750, rx3400, hx4700 h6310 h6315 Palm T5, Zire 72 PDA Targus black foldable keyboard model: PA870U V3.0 Wireless keyboard brings freedom and converience 210 rotating infrared sensor arm; Landscape feature on PDAs with screenflipping software Powered by two (2) CR2032 lithium batteries (included) 8-way navigation button to simulate mouse movement