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: Verbatim Wireless Nano Notebook Optical Mouse - Graphite
Product description: Tired of mouse receivers that you have to pack up every time youre on the move? Then try Verbatims Nano Wireless Notebook Mouse. With a receiver thats small enough to plug into your laptop and leave, it offers 2.4GHz wireless performancethat means no delays in cursor movements and fewer cords to pack. The receiver also slides right into the bottom of the mouse for safekeeping. Its sleek design offers a smooth, contoured comfort grip for right or left hand use and a programmable roller button, which means you can assign your favorite features to the roller and make your work easier. If you need a mouse that travels well in tight spaces, this mouse is for you. Small enough to fit easily in work totes, backpacks or even handbags, Verbatims Nano Notebook Mouse makes it super easy to Go Nano.
Product feature: Nano Receiver Small enough to plug in once and leave connected., Wireless Plug in nano receiver and go wireless. 2.4GHz reliability and performance., Nano Slot Convenient nano receiver storage for when you need it., Comfort Grip- Smooth,contoured design allowsfor comfort and control., Verbatim has been a leader in data storage technology since 1969, and guarantees this product with a limited lifetime warranty and technical support
Product price: $13.79
Product brand: Verbatim
Target attributes: Connectivity
Answer: attribute: connectivity
value: wireless
source: product feature
attribute: connectivity
value: wireless
source: product title
attribute: connectivity
value: wireless
source: product description