This is a needle case and needle threader in a 4 1/2" case. You could wear it as a piece of jewelry by adding a chain or ribbon through the ring on the top. The top section unscrews to hold needles in the upper area. You won't get many in but you will always have them close by. Pull off the bottom section and you will find a needle threader.
The wire of the threader is heavier than many you may have seen. At $7.99, it is a great idea for gift exchanges for quilting friends or for a hostess gift at a holiday get together. Binding seems to go so much faster when chatting with friends over tea.