content: Yep, my current device has a headphone jack and a battery that is changed by simply popping the back off with a fingernail. Why would I "upgrade" to a device without these features? So I can pay $29.95 for a headphone adapter or $149.99 when the battery dies and I need to get it serviced by a "professional", instead of ordering a $20 battery online and changing it out myself in 30 seconds?