Feature: 1. Mood Relaxing: Smart white noise machine provides a variety of white noise modes to help relax the mood, which can provide the best sleep aid effect, suitable for night use. 2. Smart Sleep Analysis: White noise sleep aid helps optimize sleep quality and achieve deep sleep with intelligent sleep analysis function, which is suitable for most people. 3. Adjust Volume and Timer: White noise sound machine allows you can easily adjust the volume according to your need, with timing function, suitable for home needs and daily life. 4. Simple Design: White noise machine suitable for home use, effectively calming mind and treating insomnia, with a small size and lightweight design for easy traveling use. 5. Widely Use: White noise device can be used for sleeping, lightweight and portable, which is convenient for travel or outdoor use, allowing you to enjoy quiet moments anytime. Specification: Item Type: White Noise Sound Machine Material: Plastic Size: Approx. 8.5 x 5 x 3cm / 3.35 x 1.97 x 1.18in Battery Type: Lithium Battery 1200mah (Included). Package List: 1 x White Noise Device 1 x USB Cable 1 x User Manual