Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Dennov VR-BK6 8 GB Digital Voice Recorder MP3 Player Clearance
Product feature: VOICE RECORDER and MP3 PLAYER 2 in 1: The Dennov Voice Recorder is the perfect fusion of voice recorder and Mp3 player. It is a perfect tool for students, writers, professionals or any other users who need it. Using the most common Micro-USB to USB cable to charge the device and transfer files. (Most voice recorders in the market use Mini-USB to USB cable that is not easy to replace.), GREAT CAPACITY and LONG BATTERY LIFE: 8GB of internal memory, 560 hours of recording without the need for additional memory cards. Sort your notes, recording and music files in one simple device, WAV FORMATES to RECORD and STORE: Customized the recording setting with WAV formatting to seamlessly transfer the files via Micro-USB to USB cable to your computer, ULTRA SENSITIVE MICROPHONE and CLEAR BUILT-IN SPEAKER: With ultra-sensitive microphone to promise high quality sound. Also, the built-in speaker is clear and loud for your awesome listening experience, PORTABLE and STURDY DESIGN: Made of high quality metal. FCC approved
Product brand: Dennov
Target attributes: Max Battery Life
Answer: attribute: max battery life
value: None
source: None