Mobile Burn had a look at this clamshell phone from Panasonic, here's a snip from their full test report:

After the pink Panasonic VS2 that we had for review recently, Panasonic Malaysia has loaned us a pre-production unit of the MX6. In the same way that the VS in the VS series stands for Visual Slim, representing the glorious screens and slim form factors of the series, we have the MX series, for Maximum Endurance. The MX6 is powered by a 1660 mAh Li-Ion battery, which is twice the capacity of the VS2's 830 mAh Li-Ion. This means double the talk time, double the standby time, and a bigger bulge in your pocket due to the humongous battery.



Link: Mobile Burn