1600 DPI 1600 Battery powered Batteries HP X4500, Right-hand, Laser, RF Wireless, 1600 DPI, White HP X4500. Form factor: Right-hand. Movement detection technology: Laser, Device interface: RF Wireless, Movement resolution: 1600 DPI, Buttons quantity: 3, Scroll type: Wheel. Power source: Batteries. Product colour: White Let's face it: buying a new mouse for your computer is something even less than an impulse purchase. You want to spend as little time as possible doing research for this purchase, so I'll give it to you straight. The only three reasons to buy the HP X4500... The HP x4500's sloping surface and large thumb rest hold your hand in a natural position for all-day comfort. The small wireless receiver offers the ease of plug-and-play, and the laser sensor has razor-sharp precision across most surfaces It's not quite as good as some cheaper competitors. The mouse is contoured for right-handed users only The HP x4500 is a reliable and comfortable mouse, but it's just not quite as good as some rival models you can buy for less... HP just keeps on adding to its Wireless Mouse range. After the X4000 we reviewed last June, HP released this one, the X4500, which has a laser sensor and a... There's nothing to adjust, you just plug it in and it works, Fine for productivity and web browsing, Light lights up when the batteries are low Very few buttons, Not close to fast enough for gaming, No continuous scrolling, Glossy surface = sweaty palms The X4500 can handle speeds higher than the X4000, but still not high enough for anything but productivity and web browsing. Since the X4500 doesn't have any new features but does have more glossy surface area, which makes your hands sweat more, we recomm...