C3 Night Light Bluetooth Speaker USB Charging Sleeping Light, Specification: Ordinary 1. It is both a night light and a speaker, protecting the eyes and soft light, and shocking the sound quality 2. Built-in 1200mAh lithium battery, according to different brightness, the battery life is up to 4.5-72 hours 3. Press and hold for 3 seconds to adjust the brightness of the light, the brightness can be selected at will 4. Simulate comfortable candle light, soft and not dazzling 5. Note: When the power of the product is low, there will be a voice prompt, please charge it in time 6. Interface type: USB 7. Frequency response range: 20Hz-20KHz 8. Output power: 4W 9. Signal-to-noise ratio: greater than or equal to 60dB 10. Power supply mode: built-in lithium battery 11. Extended storage: not supported 12. Number of speakers: 1 13. Bluetooth effective distance: 10 meters 14. Operation mode: button 15. Material: ABS, electronic components 16. Rated voltagecurrent: 5V1A 17. Rated power: 4W 18. Product size: 124 x 90 x 205mm