Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: 512MB USB 2.0 Digital MP3 Player w/FM Tuner/Recorder
Product description: Take your music with you everywhere you go! This handy little device features 512 MB of flash memory for storing MP3, WMA, WMV, ASF and WAV files and a USB 2.0 interface for quick data transfers. Its ultra portable design makes it hassle free to take with you anywhere; attach it to your keychain and Go! Order today!
Product feature: Ultra portable / Color: Orange / Flash Memory: 512 MB / PC Connection: USB 2.0 / Built-in FM tuner, Built-in FM recorderBuilt-in / Max. Playing Time: 10 hours (on one AAA battery) / Sample Rate: 8 KHz, Recording Format: WAV/ACT / MP3 bit rate: 8 Kbps ~ 320 Kbps / Frequency response: 20 Hz to 20 KHz, Play button / Headphone in jack / Volume up button / Volume down button / Hold button / Mode dial, Runs on one (1) AAA battery (included) / LCD / Built-in microphone
Product brand: Generic
Target attributes: Screen Size
Answer: attribute: screen size
value: None
source: None