Main Features: -Support Bluetooth Music Playback: Using Bluetooth 5.0 version, it supports 10m efficient and stable transmission. Connecting to smart devices such as mobile phones and tablets is more stable. At the same time, it supports hands-free calling.  -360°Surround Sound: The 52mm full-range professional speaker, 360° surround sound, releases a layered natural ecological sound and brings an immersive vocal experience.  -Wireless Fast Charge: Mobile devices that support the EPP protocol are charged quickly at 10W; the built-in full power-off protection makes charging easier and safer.  -8 Hour Battery Life: Battery life is affected by sound volume.  -Seven White Noise Modes: Rain sound, wind sound, forest mode, ocean wave, birds song, cicadas sound, creek sound.    Specification: Bluetooth:5.0;  Color:White;  Power Input:DC5V/2A; DC9V/2A;  Wireless Charging Power:Support 5W/10W;  Speaker:4Ω5W;  Working Time:8h;  Sound Mode:7modes;    Battery Information: Battery Type:Li-ion battery;  Battery Capacity:1800mAh;    Dimension: Product Weight:about 0.43kg;  Package Weight:1kg;  Product Size:15.00 x 8.70 x 7.65 cm;  Package Size:35.00 x 12.00 x 12.00 cm;    Package Contents: 1 x White Noise Machine;  1 x Manual