has 20 soothing sounds that allow you to select the perfect channel and get ready for your rest. This sound machine features night light that can emit a warm light and provide a of safety. The sound machine allows you to setup optional 15, 30, and 60mins automatic shut-off timer. The sound machine remembers your last settings of the sound and volume level when you turn it on. This white noise sound machine is small and , portable and travel use. Size: 90 x 90 x 31mm. Input voltage: DC5V. Working voltage: 3.7V. Battery capacity: 1200mah.(Built-in) Use time: 15~30 hours. Charging time: 1.5 hours. Item Type: Sleeping Monitors Model Number: White Noise Player color:White Material:plastic Package Contents: 1 x 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.