Philips Xenium NRG Phone with Battery Backup

The new Philips Xenium NRG is the first mobile phone that uses Techitium’s BackuPower system.

It allows users to add an AAA battery to the handset to get it to work a little longer w/o recharging.
This device looks like a white Walkman phone with a little bump where you put the battery.

 Pricing and availability details are unknown. Anyway it's nice to know it's out there...