licking all over the place, especially when doing design work.

It does have some nice features with the long battery life, two scroll wheel options and wireless functionality, but these are meaningless in light of the clicker problems. Some users have posted videos / guides on the internet about how to open the mouse up and fix the issue but I don't have any intention to perform surgery on it.

Give that this isn't a one off issue and many other users have the same problem, I would not recommend buying this mouse.

UPDATE 11/29/16 - Review changed from two stars to one star: I've had to warranty this mouse twice now with Logitech - both times have been a HUGE hassle with the service representative taking almost 2 weeks to respond in some instances. The warranty process took almost 2 months each time and was not efficient. I have also recently had similar issues with the Logitech Wireless Solar Keyboard K750 which randomly stops working. I've had enough of these unreliable products from Logitech and will be purchasing input devices from another manufacturer going forward.

它还是有一些功能比较好的，比如电池寿命比较长，两个滚轮的选项和无线功能也比较好用，但这些比起鼠标点击的问题来说是毫无意义的。一些用户已经在网上发布了关于如何正确使用鼠标和解决问题的视频和指南，但是我并没有任何要解决这个问题的打算。

我给出的并不是简单的问题，而且许多其他用户也出现了同样的问题，我不建议大家购买这个鼠标。

 11/29/16 更新

 我给的评价之前是二星，现在我改成了一星：罗技已经对我这个鼠标进行了两次维修 - 这两次都让服务人员花了近两周的时间来处理。维修过程中，每次花费近2个月的时间，效率一点都不高。我最近还遇到过其他类似的问题，罗技的无线太阳能键盘K750随时都可能会让我无法使用。我已经有了很多来自罗技公司的让人头疼的产品，以后已经打算入手别家的同类产品了。

000 days, even if I end up getting half that in real world usage it's still pretty good.

The reason I am giving this mouse 4 stars instead of 5 is because over time it develops an infuriating and very frustrating double click defect, i.e. you click once and you get two clicks and maybe even three in a row. I purchased the same mouse in January of 2016 which means it lasted just under two years, so be prepared to replace it at some point, I've had 4 of these mice and they've all had the same issue.

Do a search for "logitech mouse double click" and you will see that it is a fairly common issue. One website even offers a "how to" so you can repair the mouse, but essentially the copper spring or the micro switch inside become worn and without the ability to buy new parts this is a repair that you will probably have to do over and over again.

This particular mouse (purchased Dec 2017) came with a slight defect where the mouse buttons had an excessive travel range before it would click, it was a fast fix to just snap in place the ill assembled housing but this might not be for everyone to figure out.

Pros: Comfortable and accurate.
Batteries (2 AA) last a long time.
Free software.

Cons: Develops a double click defect over time (clicks twice with on a single click).
Bad quality control on Logitech's part, some units leave plant defective or ill assembled.
Clear plastic blister pack. It's almost 2018, the world is drowning on plastic and we're still doing this!?

我给这个鼠标的评价是四星而不是五星，因为用久了以后，会发现它有一个非常令人愤怒和沮丧的双击缺陷，你只点击了一次，但是还是会得到已经点击两次或者三次的结果。我在2016年1月购买了同款的鼠标，这意味着它只用了不到两年的时间，所以我准备某个时候换掉它了，我有这些鼠标中的4个，他们都出现了同样的问题。

你在网上搜索一下“罗技鼠标双击”，会发现这是一个相当普遍的问题。一个网站甚至提供了“如何”解决的方法，所以你可以自己修复鼠标，但基本上铜弹簧或微型开关里面会被磨损，如果没有能力去买一个新的零件的话，修复过程你可能就需要重复一遍又一遍。

这个特殊的鼠标（2017年12月购买的）带有一些轻微的缺陷，鼠标按钮点击一下有可能会造成点击过度，只要修复合适的话可以很快速的弄好，但这可能不是每个人都能弄清楚的。

优点：很好用、点击精准。

电池（2 AA）寿命很长。

软件是免费的。

缺点：用久了会发生双击缺陷（只点一次也会出现点击两次的结果）。

罗技的质量控制做的不够好，有些设备本身就有点损坏了或者组装不良。

包装是用的透明塑料泡罩。已经快到2018年了，世界都快要抛弃塑料了，我们仍然这样用这样的包装！？