RR2150
1. It's a high-quality radio tuner suitable for adding to an Outlaw 950. But its an analog radio with no capability for tuning in the digital broadcasating technology said to be about to revolutionize AM and FM radio(hence the "and this may be the last product of its kind").

2. I agree with the time-shifting element referenced above; 2150 probably refers to the recording time/capacity of the unit (e.g., 2.15 GB).