I purchased this new and used it about three times. Please understand that this is a used item before purchasing. Instant purchase is OK. [Includes 21 types of soothing sounds] 8 soothing natural sounds (birdsong, ocean waves, waves on the beach, summer rain and thunder, rain sound 1, rain sound 2, campfire sound, insect chirping) are available, allowing you to create various atmospheres even at home. It also includes white noise, pink noise, brown noise, and 3 fan sounds, which are effective for improving sleep and increasing concentration. Furthermore, sounds for babies ("sucking" sound, vacuum cleaner sound, mother's womb sound, Schubert's lullaby, Twinkle Twinkle Little Star, sleep music box, lullaby) are also available, so you can quickly deliver your favorite sleep sounds.