How it Works: Insert one of Aera’s 50+ masterfully designed fragrances into your Aera device. Set a schedule and adjust levels for your Aera device so your spaces smell great all the time Enjoy your fragrance for up to 60 days before switching out for a new one! Be sure to subscribe so you never have to go empty. * this listing only comes with the diffuser and the charging adapter. To purchase essential oils pods for the device visit Aera’s online shop.