These were the most miraculous things for MOTN breast pumping sessions. They clip onto the breast shield/flange to allow you to see what’s going on without blinding you overnight with a phone light or waking up others by turning on the room light. The clips retract up and down for storage, and the lights are USB-C rechargeable (cable not included in this listing). Product website here to read further information about these: https://lactalite.com/