Battery length....sound...capacity

firmware...support...thumbwheel(when your trying to go through 15gigs of music)

Going on 2+ yrs of use and it's still going strong. Being an older player it is large in size but works great for my use. I don't use it for jogging or working out...just to take music and podcasts with me. I work 12 hour shifts and this unit still plays non-stop for 12 hours! I love the EQ but don't like the firmware. Unless you have a playlist loaded to the player and you want to play via artist selection it will play only one song at a time. Other than that....it plays fine and sounds great.

Customer Service

Out of India....I would rather search the user forums for answers to my questions

Similar Products Used:

Nano 4 gig, i-river 512meg