http://www.logitech.com/index.cfm/mice_pointers/mice/devices/143&cl=us,en#
Precision
Experience performance.
Precision Laser Engine: Experience smoother cursor control on virtually any surfaces.
Tilt Wheel Plus Zoom™: Effortlessly scroll side-to-side. Instantly zoom in and out. Perfect for viewing digital photos and spreadsheets.
Robust Cordless Performance: Experience a powerful and reliable signal with 2.4 GHz Digital Cordless―virtually no delays or drop outs.
Comfort
Work happier.
Superior Comfort: Be at ease with soft textured grip in a contoured shape
Ambidextrous: Use it with your left or right hand.
Cordless: Keep wires out of your way.
Light, Durable Design: Carry it anywhere and use it with natural ease.
Convenience
Simplify life.
Wireless Micro-Receiver: Store the plug-and-play receiver right into the mouse for transport. Turns the mouse off to save batteries.
Extended battery Life: Use it up to a year without worrying about batteries.
Power Management: Go longer with a low-battery light and auto-off.
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Last Comment...
Very nice and accurate mouse....
我也刚买了一个。。。 
给偶LP~~~ 
不知道电池能用多长时间？
等没电了上来顶贴。。。 
xiaofeinet于2008-12-25写道:
不知道电池能用多长时间？
号称一年～
不用的时候会自动进入待机状态
我买了个蓝色的，送的电池都一样啊 :cn08:
刚刚发现一个更白菜价的~~~
BTW这个鼠标现在涨价了+10 