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: Apple iPhone 6 Plus, GSM Unlocked, 64GB - (Refurbished)
Product description: The iPhone 6 Plus is bigger, thinner, and more powerful yet its extraordinarily efficient on battery usage. The engineers at Apple have amazed us again by adding a new barometer sensor that measures air pressure to determine elevation, increasing the phones battery life, adding the capacity make calls over Wi-Fi, and improving the processor architecture that rivals the processing power of a desktop computer. This phone, at this price is not to be missed. This Amazon Certified device is in EXCELLENT cosmetic condition, it is 100% fully functional as tested by our expert technicians and passed an industry leading 65-point inspection. The device may have minor cosmetic wear such as minimal light scratches on the screen and minor imperfections on sides and/or back. The device has been thoroughly inspected, cleaned and refurbished (if necessary) at our manufacturer approved repair center. Includes New OEM A/C Adapter & Data Cable. Devices do not include a SIM card, headphones, original box, and a manufacturers warranty. This GSM UNLOCKED device is being sold for use with only GSM Carrier networks such as, T-Mobile and AT&T. Please check with your carrier for compatibility. This item is covered by our 90 day money back guarantee., Amazon Renewed is your trusted destination for pre-owned and refurbished products that are inspected and tested to work and look like new. A Renewed supplier who is Amazon-qualified and performance managed, but not Apple certified, performs a full diagnostic test, replaces any defective parts, and thoroughly cleans the product. Any repairs are made with Apple components that are new, or reused and in like-new condition. The products will have minimal to no signs of wear, no visible cosmetic imperfections when held 12 inches away, batteries with at least 80% capacity relative to new, and may arrive in a brown or white box with relevant accessories that may be generic., Backed by the 90-day Amazon Renewed Guarantee. Your product is eligible for a replacement or refund within 90 days of receipt if it does not work as expected. Get quick support for claims and free troubleshooting via a single point of contact at Amazon. The guarantee is in conjunction with Amazons standard return policy. Learn more, Shop for smartphones, computers, laptops, tablets, home and kitchen appliances, game consoles, office products, and more on Amazon Renewed .
Product feature: Professionally inspected and tested to work and look like new, and backed by the 90-day Amazon Renewed Guarantee. Box and relevant accessories (no headphones included) may be generic., GSM Unlocked Phones are ONLY compatible with GSM carriers like AT&T and T-Mobile as well as other GSM networks around the world. They WILL NOT WORK with CDMA carriers like Sprint and Verizon (Search for "Fully Unlocked iPhones" for CDMA compatible iPhones)., 5.5-inch touchscreen display with a resolution of 1080 pixels by 1920 pixels at a PPI of 401 pixels per inch., Powered by Apple A8 processor, 8-megapixel primary camera on the rear and a 1.2-megapixel front shooter for selfies.
Product price: $49.99
Product brand: Apple
Target attributes: Form Factor
Answer: attribute: form factor
value: None
source: None