The Nimbus tunable white LED video conference lighting is the perfect solution for your video lighting needs. The Nimbus series is the perfect combination of LED battery and USB powered fill and ring lights to suit your video conferencing and home or office studio lighting requirement. The Nimbus Halo is a 6? ring soft light that is USB powered LED tunable white fill light. Halo can be powered from either the Sidekick (sold separately) or any USB device. Halo can be either stand alone or work in unison with the Side Kick to help fully model the lighting area.