Microsoft Lumia 550 review: The latest entry-level Lumia brings some good with the bad | Windows Central
Good Condition Microsoft Lumia 550 Black UNLOCKED 4G Smartphone | eBay
Microsoft Lumia 550 packs a 4.7" display with 720 x 1280 pixel resolution, 1.1GHz Qualcomm Snapdragon 210 processor 1GB RAM, 7.5GB ROM. Comes with the windows 10 operating system, 5MP primary camera and 2MP Secondary camera.
Microsoft Lumia 550 vs 640 comparison: battle on a budget - Neowin