The new BlackBerry model is basically the same as the 7200 series models except it now includes a speakerphone and a digital walkie-talkie. The walkie-talkie service is provided by Nationwide Direct Connect the coast-to-coast digital walkie-talkie service.
Currently you can only use this device on Nextel, which means anyone outside of the US is currently out of luck as it does not support GPRS/GSM networks.
The data and voice-enabled BlackBerry 7510 features:
– Phone, email, browser and organizer applications in a single wireless handheld
– Long-range digital walkie-talkie feature
– High Resolution 240×160 display supporting over 65,000 colors
– Ample memory for application and data storage
– Java development platform based on open standards
– Full-featured connected organizer with PC synchronization
– Integrated attachment viewing
– Powerful, compact form factor