A. **Portable Baby Sleep Music Player (Gift Edition with Hanging Strap)** - Adjustable Volume: The adjustable volume control function can help you achieve a suitable sound effect. - 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. - Portable Size: It has a small size and is light in 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. - White Noise Generator: It can help create a quiet environment, improve concentration during study or work, and assist babies in falling asleep faster and having a good rest. It can be easily hung on a baby stroller or placed directly on the table. - Smooth and Burr - free Surface Design: It is small in size, portable and lightweight. - 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). - Battery Requirement: It requires AAA batteries (batteries are not included in the product). B. **Specification Parameters** - Package Contents: 1 baby sleep music player. C. **Notes** - Due to different personal measurement methods, there may be an error of 2 - 4 centimeters. Please understand. Thank you for your support!