Features: White noise is not only beneficial for improving sleeping quality, but also for improving concentration and working efficiency.  White noise is very similar to the sound of mom's womb, which can greatly soothe the baby; also suitable for students, young people, and the elderly. Built-in 6 soothing sounds for option: rain, forest, waves, stream flowing, lullaby, and white noise, each kind can greatly aid sleep. With breath light, soft warm light can create an environment which is more suitable for sleeping, helping you entering the sleeping state quickly. Built-in 1200mAh large capacity battery with long working time up to 30 hours, can be easily charged through power bank, adapter, computer, etc. With intelligent timing function, convenient for use; compact size and light weight, good for home use, office use, and travel use. Specifications:  Color: White  Material: ABS/PC Rated Power: 1.5W Color Temperature: 2700K-3100K Working Temperature: -10℃-55℃ Battery Capacity: 1200mAh Charging Time: 1.5 hours Working Time: 15-30 hours Product Size: 9 * 9 * 3.1cm/ 3.5 * 3.5 * 1.2inch Product Weight: 115g/ 4.05oz Package Size: 9.2 * 9.2 * 6.5cm/ 3.6 * 3.6 * 2.5inch Package Weight: 165g/ 5.8oz Package List: 1 * Sleep Machine