Big Red Rooster Sound Machine has 6 natural sounds including: Rain, Brook, Thunder, White Noise, Ocean and Summer Night! 
All sounds are relaxing and clear, my favorite ones are Rain and Thunder. 
The Sound Machine has an optional timer that can be set for15, 30 or 60 minutes. 
The Sound Machine is light weight, operates with either three AA Batteries or with the AC adapter included. Its light weight so you can take it with your when traveling or like I have done; by using in either my bedroom or livingroom. 
Very much enjoy the Big Red Rooster Sound Machine!! So glad I had an opportunity to try out this product and to provide my feedback! [This review was collected as part of a promotion.]