Warm white light: Each of the bulbs has a warm white LED light. Summer garden: Great for adding ambiance to your outdoor space, these retro bulb lights are powered by solar energy.. Solar lights: Get a pack of retro bulb solar lights. Rechargeable battery: Once they have charged in the sun, the battery will keep them working for up to eight hours. Functions: Features two light functions: flashing and static. | Retro Bulb Solar Garden String Lights | Wowcher