. 8 to 10 hours of battery life.

. 2.4 pounds - 50 sold units weigh 115 pounds total.

. 1.4 pounds without battery, AC/DC seat powered.

. Comes with 8-10 hour computer battery or can be seat powered (One airline loads recharged batteries in morning flies trancon 5 hour leg, return flight on same battery which is recharged for next morning)

. With battery about 3 lbs pounds each, Seat powered weighs 1.4 lbs

However, there`s a notion flying around out there in never never land...with commentary to the effect that e.Digital technology is for battery powered appliances only....if that is the case..then why bother with the AC/DC option on the 5500 ?

For the functions of the player....it`s not important what the power source is....the package is capable of both.

doni