The iPhone Lightning Dock was a minimalist charging dock with a heavy base, protruding angled Lightning connector, and two ports on the back—a Lightning port and an audio jack to allow music to be played on a speaker or headphones.
The iPhone Lightning Dock was available in several colors during its lifetime, including white, black, silver, space gray, rose gold, gold, and “new” gold (to match an updated gold iPhone color). This example is silver.
Apple described the Dock: “You can use it to charge and sync any iPhone that has a Lightning connector. Your iPhone sits upright in the dock as it syncs or charges, so it’s ideal for a desk or countertop. Even when your iPhone is in an Apple-designed case, it’s easy to dock. And you can unlock iPhone or use Touch ID without having to remove it from the dock.”
Source: Apple