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: (2) Boss HIR9BGTM 9" Interchangeable Black/Gray/Tan Car Headrest Monitors+Remote
Product description: Boss HIR9BGTM 9" Car Headrest Monitor with Interchangeable Colors Black/Gray/Tan Interchangeable Skins included: Black, Tan, and Gray Resolution: 800 x 480 Video input: 1 Video output: 1 Screen size 9" LED Backlit Panel for bright clear picture 16:9 Aspect ratio Universal design Auto select for PAl/NTSC Built in speaker Headrest Posts adjustable: 4"-7" Headphone output Built in IR Transmitter Wireless Remote Included Dimensions: 5.5"L x 12"W x 14.75"H
Product feature: Boss HIR9BGTM 9" Car Headrest Monitor with Interchangeable Colors Black/Gray/Tan, Interchangeable Skins included: Black, Tan, and Gray, LED Backlit Panel for bright clear picture, Headphone output, Wireless Remote Included
Product brand: BOSS Audio Systems
Target attributes: RMS
Answer: attribute: rms
value: None
source: None