Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: BOSS SK653 6.5" 350W 3 Way + 6x9" SK694 700W 4 Way Car Coaxial Speakers Set
Product description: Package Includes: Boss SK653 6.5" 350W 3-Way Car Speakers (1 pair) Boss SK693 6x9" 700W 4-Way Car Speakers (1 pair) ----- The Boss SK653 PHANTOM SKULL Series loudspeakers utilize high quality poly injection cones with rubber surrounds for top performance. A custom tooled bridge houses midranges and tweeters for outstanding mid and high frequency response. Custom feature to the PHANTOM SKULL Series loudspeakers provide extra visual excitement when SKULL eyes light-up to the beat of the music. The Boss SK694 Phantom Skull Series loudspeakers utilize high quality poly injection cones with rubber surrounds for top performance. A custom tooled bridge houses midranges and tweeters for outstanding mid and high frequency response. Custom feature to the Boss SK694 Phantom Skull Series loudspeakers provide extra visual excitement when SKULL eyes light-up to the beat of the music. We are an authorized Boss dealer ![alt text][1] [1]: https://www.vminnovations.com/sys/resource.ashx?guid=6088617e844b4420a69def16beba86bb
Product feature: New Boss Skull 6.5" 350 Watt 3 Way Car Speakers, 350 Watt MAX, Poly Injection Cone Material, Stamped Steel High Gloss Black Baskets, Unique Skull Cover
Product brand: BOSS Audio Systems
Target attributes: Sensitivity
Answer: attribute: sensitivity
value: None
source: None