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: Prolynkz Zynkz PZXT-438G 8GB MP3/MP4 Player
Product description: The Prolynkz Zynkz PZXT-438G 8GB MP4/MP3 Player lets you fit up to 8 gigabytes of music right in your pocket. It can also double as a handy USB flash drive or a digital voice recorder, in case you've got to record a brilliant idea for posterity. The Prolynkz Zynkz PZXT-438G 8GB MP4/MP3 Player outputs your music to your favorite pair of earphones, and contains a readable LCD screen to indicate which track you're on. It runs for up to 10 hours of play on a single AAA battery and takes both MP3 and WMA files.
Product feature: It can also double as a handy USB flash drive or a digital voice recorder, in case you've got to record a brilliant idea for posterity.
Product brand: Prolynkz
Target attributes: Battery Life
Answer: attribute: battery life
value: up to 10 hours
source: product description