The ScentPlug™ Starter Kit includes 1 ScentPlug™ base (UKplug) with adjustable fragrance settings and 1 of our true to life Yankee Candle fragrances. They’re easy to use; simply plug the fragrance cartridge in to the ScentPlug™ base, adjust the fragrance strength to your preference, plug in, switch on and you’re ready to go. Each fragrance lasts up to 6 weeks. Once your fragrance has come to an end, simply switch out the fragrance cartridge with a new fragrance refill, available and sold separately in twin packs in a variety of fragrances.