1. Relieve stress and support sleep: Gently plays soothing sounds to help improve sleep quality. Designed for comfort, it eliminates the need for headphones, helping avoid potential discomfort from prolonged headphone use. This infant sleep aid can play children's stories and is designed without radiation.2. Elegant design: The speaker features a sleek, modern look with stylish color options. The smooth shell provides a pleasant touch, and the curved body offers a comfortable feel. Simple button layout with intuitive controls, includes timer function with 30-minute and 60-minute auto-shutdown options.3. Type-C charging interface: Fully charges in approximately 2 hours. Supports convenient plug-in charging with overcharge protection for safe usage. Low power consumption during long-term storage. Up to 20 hours of playback time, ensuring extended use and long standby life.4. Gentle sound output: Can be placed under a pillow for soft audio delivery. Utilizes advanced bone conduction-inspired technology to transmit sound efficiently, allowing users to enjoy audio without direct ear contact. Lower radiation design, safe for children. Lightweight and portable for use in various settings.5. Dual-speaker sound diffusion: Delivers 3D surround sound with clear high frequencies and rich bass response. Enhances overall audio experience. When placed under a pillow, produces natural sound that helps children fall asleep faster.Size: 89.4 x 59.3 x 12 mm Wireless Version: 5.2 Device Name: -829V Battery Capacity: 500 mAh Battery Life: 20 hours Connectivity: Wireless / TF card / Audio input Charging Port: Type-C interface Audio Crossover: Full-Range Waterproof: Yes Communication: Bluetooth Speaker Type: Portable Channels: 2 (2.0) Battery: Yes Power Source: USB Number of Loudspeaker Enclosures: 1 Input Power (W): Less than 25 W Bluetooth Version: 5.0 Playback Function: MP3 PMPO: 5 W Impedance: 4 Ohm Output Power: 5 W Supports Memory Card: Yes Color: Green Material: Plastic Package Contents: 1 x Bone Conduction Music Box Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual product. Measurement error allowance is +/- 1-3 cm.