Usb Rechargeable Sleeping Sound White Noise Machine Product parameters Model: Q Voltage input: DC5V=0.5-1.0A Power: 1W Battery: 800mAh Battery Cycle Times: 500 times Use time: 30-36 hours Charging time: 1-1.5 hours Instructions for use 1. The product has a total of 5 buttons, a switch button (including play/pause function), a timing button, a light button, a previous song (including sound reduction function), and a next song (including sound plus function) . 2. A total of 9 sleep-aiding music (white noise, ocean waves, crickets, rain, birds, water, lullaby 1, lullaby 2, lullaby 3) 3. The light button can work independently, and it can work even if it is not turned on. 4. Press and hold the switch for 0.5 seconds, short press to pause the playback, and play a piece of music after turning it on, and the music is made to loop all the time. Press up and down to switch, and long press to increase or decrease the volume. After booting, it will play with memory, which music will also have memory, and the next time you turn it on, it will automatically play the music that was turned off last time. 5. Press the light button, it is divided into 6 cycles, from 10 minutes to 0 as a cycle, 10 minutes to start the countdown, 10 minutes to start the breathing rhythm gradually slow down. The light is bright for inhalation, the light is weak for exhalation, and the breathing is guided. This function is automatically closed for 1 hour. If the timing function is not turned on, if the timing function is turned on, press the timed time. 6. The timing 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 closes the timer. Indicated by LED lights respectively. 1. Due to different monitors and lighting effects, the actual color may be slightly different from the image 2. Due to manual measurement, please allow 1-3cm deviation Product size: 80*80*33mm Shipping color: white Quantity shipped: 1