Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Base Audio Reflex G7 High-Fidelity Headphones (Brushed Aluminum)
Product description: Every aspect of music quality and sound reproduction was considered during the design and development of the Reflex Series headphones. As a result, we created a semi-open back, clean sounding headset that is less fatiguing an more enjoyable than many headsets on the market today. Our approach was simple, provide a light-weight, comfortable, reliable headset with superb sound quality for the meticulous music audience. Our open-back air acoustic balance and clear signature sound provide a spectacular audio experience in musical listening pleasure. Quality construction is paramount to our company mission. Our Reflex Series Headphones are designed and manufactured in the United States using quality materials and precision components that provide years of listening pleasure. From quality aluminum enclosures to precision electronic components, we strive to set the standard in high quality audio equipment with magnificent style and sound. Designed with comfort in mind, the Reflex headband contours to a perfect fit. Memory foam padding, lightweight materials and precision adjustable ear pads, allow hours of listening enjoyment.
Product feature: Redefining Clear Clean High-Fidelity Sound., Light weight, Classic Polished Aluminum Construction, Semi-Open Back Headphones, Intended for use with portable devices and traditional amplifiers., Reflex G7 Headphones come with a 2-year limited warranty when purchased from an authorized dealer including Amazon.com
Product price: $7.69
Product brand: Base Audio Professional Reflex Series
Target attributes: Connectivity
Answer: attribute: connectivity
value: None
source: None