Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: QFX PBX-7 8" Bt Prtbl SPKR FM Radio
Product description: 8" BT portable speaker FM radio, 2600 mAh rechargeable battery, USB, aux InDesign that delivers high availability, scalability, and for maximum flexibility and price/performance.
Product feature: 8" BT portable speaker FM radio, 2600 mAh rechargeable battery, USB, aux in, design that delivers high Availability, scalability, and for maximum flexibility and price/performance, Manufactured in China
Product price: $6.52
Product brand: QFX
Target attributes: Configuration
Answer: attribute: configuration
value: None
source: None