Check the listing for details. Wasserstein Bulb Socket With USB Port. Condition: New. Listed at 19.50 USD. The Wasserstein Bulb Socket with USB Port is a smart home electronics device that allows you to easily convert a traditional light bulb socket into a USB port, enabling you to charge your devices while still having the ability to control the lighting. With the Wasserstein brand known for quality and reliability, this product offers convenience and flexibility for powering and charging various electronic devices in your home.