[8 Natural White Noise Sounds]Features gravity-sensing technology with 8 different natural white noise sounds, including ocean waves, piano, jungle birds, rain, stream, cicadas, fan, and strong wind. [Smart Noise Masking]Long-press the M button to collect ambient noise and intelligently play white noise above the surrounding noise level, effectively masking disturbances. [Premium Design]Scratch-resistant metal silver exterior with laser-engraved blue digital display, featuring a 4Ω 2W full-range speaker specifically designed for white noise. [Gravity Sensing]Built-in gravity sensor automatically starts playing the selected natural sound when the device is rotated to the corresponding side. [Customizable Timer]Top-mounted timer button allows for 15, 30, 60, or 90-minute playback, as well as continuous play option for personalized sleep routines. [Long Battery Life]Integrated 500mAh polymer battery provides up to 15 days of standby time, ensuring extended use without frequent charging. [Versatile Application]Ideal for business gifts, home use, bedroom sleep aid, and various other applications, making it a practical and thoughtful choice for multiple settings. Specifications: Product Model: T11 Dimensions: 49mm diameter x 50mm height Weight: 71g Speaker: 40mm diameter, 4Ω 2W full-range internal magnet Battery: 500mAh polymer battery Standby Time: Approximately 15 days Charging Port: Type-C Input Voltage: 5V Sound Options: 8 natural white noise sounds Timer Settings: 15, 30, 60, 90 minutes, and continuous play Display: Blue LED digital display