sound easy sleeping white-noise White-Noise Sleep Aid Machine Light Infant Breathing Therapy Device with 9 Kinds of Music Specification: Item Type: White-Noise Sleep Aid Machine Material: ABS+PC+ Silica Gel + Electronic Components Color: WhitePower Supply Mode: battery (Built-in) Battery Capacity: 800mA Instructions: 1. Long press the power button for 0.5 seconds, short press to pause the playback 2. Press up and down to switch, long press for volume plus or minus one light button 3. The light key can work independently, and it can also work without turning on. Function: (The breathing rhythm of the breathing light can guide sleep)TIME-Time is divided into 15 minutes (bright red LED) 30 minutes (bright green LED) 60 minutes (bright blue LED) short press to switch, the fourth time to close the timer. They are indicated by LED lights. Package List: 1 x Sleep Aid Machine 1 x Charging Cable 1 x Manual