Yankee Candle Sleep Diffuser Bronze Starter Kit contains a Bronze Sleep Diffuser and a Calm Night Sleep Diffuser Refill with which to create a relaxing atmosphere encouraging quality sleep.Inserting the mess-free, easy to use refills into the diffuser releases a relaxing Lavender and Eucalyptus scent, sweetened with a touch of Vanilla, which provides up to 30 nights of relaxing fragrance. Equipped with 3 adjustable fragrance strengths and a programmable timer with automatic shut-off feature, this starter kit ensures a bespoke, restful sleep experience.