This is what I found on the web, share the review here

http://www.cluboverclocker.com/reviews/inp...Saver/index.asp

These days everyone wants a good wireless mouse. Even with so many options to choose from, it is hard to find a quality wireless mouse that combines performance with dependable battery life. A4 Tech has recently introduced the R7 Power Saver Mouse designed to appeal to the mouse user unwilling to compromise performance for battery life. But does the R7 really perform as well as a good wired mouse? We put the R7 to the test right here at the Club!



The R7 packaging combines a traditional box with a blister pack like front panel. This allows you to get a feel for the size and fit of the R7 without even opening the box. with over 25 million units sold, A4Tech knows how to give you everything you need up front.



The R7 Power Saver Mouse is loaded with features that help extend the battery life. The box does a nice job of describing these features and more. Even the name R7 is derived from the "R" in Radio frequency and the "7" from the 7mA power consumption.



Features:

Ultra Low Power Consumption - 7mA Only!!
4-Level Auto-power-Saving
Maximize Power Saving - Auto Power Off
Travelers Ready! Power ON/OFF button
High Speed 125 Hz RF Technology
2-Channel and 255ID
Totally no delays
Low Battery Warning Wheel
Quick access Office-jump Menu
2X Button - Click Once Instead of Twice
Power ON/OFF button
No any tag

Four Levels of Auto Power Saving:
Auto-Power-Saving design helps save lot of power intelligently Mouse sleep status Battery currents mA.

200 milliseconds unused Enter idle mode (takes 2.1mA)
5 seconds unused Enter sleeping mode (takes 0.8 mA)
70 seconds unused Enter deep sleeping mode (takes 0.1mA)
30 minute unused Mouse turns off automatically (takes 0.01 mA)



Package Contents
A4tech R7-70D Mouse
USB Extension Cable
USB RF Receiver
2X-Office Driver(CD)
2AAA Alkaline Batteries

System requirements
IBM or Compatible PC
Hard Disk Drive
Windows(R)98,2000,ME,XP,2003,X64
USB Port



The ergometric design of the R7 integrates 6 buttons and a traditional wheel. The two buttons on the side can be programmed on the fly as we will see later.



A closer look at the front shows off the unique office button as well as the 2X button. Clicking the 2X button performs a double click in a single stroke. This comes in handy for some of my FPS games and applications as well.



The R7 is powered by 2 AAA batteries (included) that are easily installed in the base. The mouse is surprisingly light weight for a battery based unit coming in at about a third less than my Logitech G7's by my guess. It is important to note the R7 is a 900 DPI mouse and had some difficulty reading my favorite mouse pad; the glass CorePad Magna.



Our R7 is finished in a very common grey and black but the green striping and logos give a sporty feel to the look.



The USB controller is actually a radio frequency based unit that can be used alone or with the included USB extension dock. the button is used to force a re-sync with the mouse but during testing we never had the need to use it.



The R7 does remind me of the Logitech G7 in more than just name. In fact, the R7 is much smaller and more light weight. And the R7 still has two thumb buttons too! It is clear from the emphasis on power savings and the smaller lighter design the R7 Power Saver is a terrific choice for a traveling laptop user.

This post has been edited by yoyo38: Aug 16 2007, 02:43 PM

Power Savings:

Although the R7 Power Saver Mouse is primarily designed to appeal to power sensitive buyers, it is quite difficult to test power savings over time. The R7 boasts it can be used continuously for over 138 hours on a single set of AAA batteries. In contrast the Logitech LX5 and Microsoft Mini Mouse 4000 mice tested can be used for 122 hours and 87 hours respectively.

The Software:



The R7 software included includes a soft copy of the manual and can easily be downloaded from the A4 Tech website.



The completed installation adds two icons to the tray. the left icon shows the currently selected function of the thumb buttons. The black mouse icon opens up the mouse properties.



The mouse properties looks very similar to the default mouse drivers with a few notable exceptions. First the thumb buttons can be used as standard buttons or as "Office-Buttons." Also the Lucky Jump Button labeled "Office" on the mouse can be seen. The #2 and #3 buttons are the only ones configurable with the Office-Button option enabled.







Ah now things get interesting. With the 4/5/6 Office-Button option enabled you can choose what hot key commands are available in your applications and default windows. There are 8 active at once with over 24 different functions to choose from.



And finally the About tab. The direct link to A4 Tech is useful as is the link to RSI information.



This menu shows the many different options you can assign to the Office button shortcuts. I found the forward and backwards function still get the most use in the office here.



Choosing a programmed hotkey is pretty easy. When you press the Office button on the mouse the above menu appears at the pointer location. Move the mouse pointer to the desired function and click. The task bar icon will change to show the active function's icon for easy reference.

Conclusion:

Despite our inability to prove the R7 is a top power saver we believe the A4 Tech claims to be true. That makes this mouse a top choice for the laptop user or anyone desiring a wireless mouse in this price range. I used the A4 Tech while building this web page and during an evening of Shadowrun online, I found the smaller size easy to get used to and pretty responsive. My only problem with the R7 was it wouldn't track dependably on my glass mouse pad. With competitors top rechargeable mice costing 2 to 3 times the price of the R7 it is an attractive choice for a casual gamer and a nice upgrade for a business user. A4 Tech also offers a line of gaming and performance mice for those with a need for more power.