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: Verbatim Wireless Multi-Trac Mouse 2.4GHz with Nano Receiver - Ergonomic, Blue LED, Portable Mouse for Mac and Windows - Black (97992)
Product description: Navigate virtually anywhere with the Verbatim Wireless Multi-Trac Blue LED Optical Mouse. The comfort-grip shape provides ease of use while Blue LED technology allows users to point and click on more surfaces than other mice - from a glass table to the granite kitchen counter! The small nano receiver can be stored in the battery compartment, offering convenient storage and portability which makes this a great full-size go everywhere computer accessory. • Blue LED - Navigate your computer anywhere, on virtually any surface with precision and control without the annoyance of it not working. • Multi-surface - Blue LED technology allows this mouse to be used on a glass* desk surface, granite counter tops, hardwood floors, or even airport carpeting. • Contour shape - Use this mouse comfortably for hours with ergo- friendly shape and easy grip surface. • Wireless - Plug in the Nano receiver and forgot about it! The small receiver plugs into your laptop's port and can stay; no need to plug and unplug bulky receiver or deal with cords. • Low Power – Efficient low power consumption requires only one AA battery. *Blue LED technology may not work on some glass or mirrored surfaces. Package Includes: Mouse, Nano receiver, 1 x AA Battery
Product feature: Multi-surface mouse featuring Blue LED sensor technology and efficient low power (battery included), Blue LED technology allows for use on virtually any surface including glass desk surface, hardwood floors, & granite counter tops with precision and control, 2.4GHz wireless connection for lag-free performance. Plug-and-forget nano receiver connects mouse to notebook or PC, Contoured design with sleek, glossy finish fits comfortably in your hand, Verbatim has been a leader in data storage technology since 1969, and guarantees this product with a 1-Year limited warranty and technical support
Product price: $11.93
Product brand: Verbatim
Target attributes: Number of Buttons
Answer: attribute: number of buttons
value: None
source: None