are 20 sounds, but those are my favorites. GREAT GIFT! I bought this for my mom as a gift - She loves it! She loves being woken up to the sound of the ocean... good find I have had other white noise machines that were highly rated but not loud enough for me. I had a chat with a sales agent who assured me he owned this one and it is loud. It has 8 volume levels and the 8 is perfect for me-but adjustable so everyone should be able to find the correct level for individual preference. It is lightweight and easy to use. I dont use or need the clock so cannot comment on that. Highly recommended. sleep medicine without the pill Having the sounds of the ocean helps me focus on drifting off to sleep. Many others to choose from but this is my favorite. Sounds are so natural!Price was very reasonable too. Awesome, would definatley recommend I bought 2 of these, one for my husband and 1 for my closest friend. Both are light sleepers and they love them. There are so many diffent sounds, lots of choices, compact & effective. I could go on and on. Would definatley recommend to buy. The purchase was fast & easy. The overall expierence was fabulous. Zzzzzzz good I use this "gift" nightly. I have a history of having a horrible time falling asleep. With this product I have less difficulty. Its very soothing and relaxing. I love it.