Built-in 8 soothing sounds (white sound, thunder, ocean, rain, bird, stream, lullaby 1 and lullaby 2), promote sleep, make people feel comfortable and sleep easier. Timing adjustment, 5/15/30minutes three-speed timing adjustment, can also play music in a loop. LED display, clearly shows installation mode and time. Alarm clock design, wake up on time, help sleep and wake up two functions.. Stylish appearance, variety of ambient sounds. Portable size and light weight ideal for travel. Specification: Item Type: Sleep Sound Machine White color Material: ABS Power: 3W Timer: 5min, 15min, 30min Battery type: 3 * AA batteries (not included) Item Size: 15*9cm/5.9*3.5inch Package weight: approx. 449g Function: sleep aid Package list: 1 * Sleep Sound Machine