Prêt a Racket designer ground spike lights with solar operation - set of 6 The six Prêt a Racket ground spike lights are not only unusual and fun in design, but can also set small lighting accents in the garden. Thanks to the ground spike, they can be placed anywhere in the ground or in flower pots. A solar panel is hidden in the rocket head, which should always be well exposed to daylight so that the batteries can charge optimally. When the battery is charged, the LEDs can shine for up to 6 hours. They switch on automatically at dusk. The built-in timer switches them off after 6 hours, but you can also switch them on again manually - simply pull the "fuse" twice.