Features: 1. The LED projection lamp has a starry effect, non-laser, safe, and there is no risk of being off the shelf. 2. Timing function 2 hours, there is a reminder sound and reminder light, the default is 4 hours to automatically turn off. 3. The product is muted when the playback is paused. 4. After the voice control mode is turned on, press again to turn off the voice control mode. 5. 16M Bluetooth control, Bluetooth switch, voice reminder when opening or closing, and when the device is connected. 6. Built-in 16 music (8 natural sounds, 8 light music). 7. Water pattern color adjustment, single color, two color combination, 3 color combination. 16 kinds of cycles. 8. Water ripple brightness adjustment, 3 levels (30% 60% 100%) cycle. 9. Water ripple speed adjustment, 3 levels (30% 60% 100%) cycle. 10. Highlight the benefits of white noise for mothers and babies and relieve the discomfort caused by work pressure. There is also a sleep aid function, which can be played properly before going to bed, which can relax the body and mind, drive away fatigue , and release stress. Product parameter: Input power: 5V2A. Light source: 4 stars + 4 water lines. Input power: 5V2A. Working temperature: -20~40℃. Waterproof rating: IP20. The product ships with USB to TYPE-C cable. Projection range: 15-50 square. Working humidity: 10%~90%. Receiving sensitivity 2Mbps-88dBm. Storage temperature: -25℃~+75℃. Average service life: 50000 h. USB: TYPE-C cable, length: 2M. Packing size: 168 x 168 x 168mm. Weight: 0.65kg. Bluetooth parameters: Reference distance: 16 (indoor) -50 meters (open). Transmission speed: SPP rate 75KB/S, BLE rate 12KB/S. Bluetooth protocol: V2.1+EDR+3.0+BT4.2 (BLE) dual mode. Working frequency band: 2.4GHz~2.48GHz license-free ISM band. Bluetooth parameters: (Bluetooth: Bluetooth 5.0 2.4GHz low power consumption long distance). Bluetooth name: XWG-102. Package included: 1 x Projection lamp. 1 x 2M USB cable. 1 x Remote control. 1 x Manual