O2’s camera-free handset, the Quad-band Jet, may tempt many business users. It has two 
headline grabbing features: no camera and, to quote O2’s Web site ‘incredible battery life’.
In many respects the Jet is not a patch on Nokia’s E60. Where built in software is concerned, if the E60 is Fred Astaire, the Jet is more of a penguin in Wellington boots. In fact, there is only one reason you are likely to plump for this handset. Like O2 says, the battery life is indeed incredible.
I was not able to run my standard music rundown test on this phone because there is no music player. Instead I had to rely on the ‘standby’ test. O2 reckons you should get up to 540 hours on standby, 9 hours of talk. After 7 days of sitting on standby (168 hours), I finally saw the battery monitor on the Jet go down to below half way. Maybe O2’s estimate is a bit wide of the mark - 540 hours is 22.5 days - but battery life does seem to be outstanding.
O2’s accessory bundle includes a car charger and desktop cradle with a USB sync and charge cable as well as a mains power adaptor. Between them these should make recharging on the road as easy as possible, and the car charger is a superb idea. TrustedReviews - O2 Jet