Description 1.Item Name:Natural Sound Sleep Aid Bluetooth Speaker 2.Size:180x85x75mm,Weight 550g/pcs 3.Eight DIY combinations of (thunder and rain, , bird calls, alpha sounds, white noises, running water, crickets, and bonfires) 4.Three speed timed shutdown function (30/60/90 mins) Color: White Material: plastic Bluetooth speaker (connected to smart products such as mobile phones and tablets to ). Bluetooth version:5.0 Power input: 5V 2A, Type-C interface Output power:2 x 5W Built-in lithium battery:1800MAH Audio output (3.5MM socket) Package Contents: 1 x White Noise Machine Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.