Voltage input: DC5V=0.5-1.0A Power: 1W Battery: polymer battery 800mAh Battery cycle times: 500 times Use time: 50 hours Charging time: 1-1.5 hours Product color: white Product size: 80*80*33mm Instructions for use 1. The product has a total of 5 buttons, one switch button (including play/pause function), one timing button, one light button, one previous song (including sound minus function), one next song (including sound plus function) . 2. A total of 9 pieces of sleep aid music (white noise, waves, crickets, rain, birds, water, lullaby 1, lullaby 2, lullaby 3) 3. The light button can work independently, and it can also work without turning on the power. 4. Press and hold the switch button for 0.5 seconds, short press to pause the playback, and play a piece of music after turning it on, and the music will be made to loop continuously. Press up and down to switch, long press to increase and decrease thevolume, and play with memory after booting, which music also has memory, and the next time you boot up, it will automatically play the music that was shut down last time. 5. Press the light button, it is divided into 6 cycles, from 10 minutes to 0 as a cycle, the countdown starts at 10 minutes, and the breathing rhythm gradually slows down after 10 minutes. The light is on for inhalation, and the light is weak for exhalationto guide breathing. This function is automatically turned off for 1 hour. 6. The timing is divided into 15 minutes (bright red LED), 30 minutes (bright green LED) and 60 minutes (bright blue LED), short press to switch, and the fourth time to turn off the timing. Indicated by LED lights respectively. Delivery quantity: 1 piece, Products from GuanGuan's store Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store