1. ### Portable Baby Sleep Music Player (Gift Edition with Hanging Strap) 1. Adjustable Volume: The adjustable volume control function enables users to achieve a suitable sound effect. 2. 12 Soothing Sound Effects: It includes 10 kinds of light music, as well as the sounds of birdsong and ocean waves. All sounds are soothing and calm, without harsh noise. 3. Portable Size: It has a small size and light weight, and comes with a silicone hanging strap. It is suitable for outdoor use and can be easily hung on a baby stroller or crib. 4. White Noise Generator: It helps create a quiet environment, improves concentration during study or work, and helps babies fall asleep faster and rest well. It can be easily hung on a baby stroller or placed directly on the table. 5. Smooth and Burr - free Surface Design: It is small in size, portable and lightweight. 6. Four Types of Music for Soothing Babies: Two lullabies, two types of natural sound effects, and three automatic timing programs (15 minutes, 30 minutes, and 60 minutes). 7. Battery Requirement: It requires AAA batteries (batteries are not included in the product). 2. ### Specification Parameters 1. Package Contents: 1 baby sleep music player. 3. ### Notes 1. Due to different personal measurement methods, there may be an error of 2 - 4 centimeters. Please understand. Thank you for your support!