1. Relieve stress and help sleep: Gently coax and sing to help sleep and sleep quality. Liberate both ears, no need to wear headphones, and say goodbye to the harm of long-term wear. Coaxing infant artifact, it can play children's stories, and it is without radiation. 2. Elegant appearance: The speaker has an elegant design and fashionable color matching. The shell has a -friendly feel, and the overall appearance is curved. button style, simple and easy to understand, timed shutdown, 30min or 60min, automatic shutdown at free set time. 3. Type-c charging interface: 2 hours full charge, convenient blind insertion, safe charging, overcharge protection, safe to use. Long-term storage, slow power consumption, battery life up to 20 hours, long-term standby, long-lasting use. 4. gentle singing: Placed under the pillow, soft singing, industry black technology bone conduction technology allows you to enjoy music, no need to wear it without hurting your ears, lower radiation, children can also use it, safe, design and easy Carry it to different for use. 5. Dual speakers diffuse sound: 3D surround sound, clear and transparent high frequency, full and low frequency. Satisfy your pursuit of sound quality. It can be placed under the pillow, makes a natural sound, and the child will fall asleep quickly. Size: 89.4x59.3x12mm Wireless version: 5.2 Wireless Name: -829V Battery capacity: 500mAh Battery life: 20H Connection : wireless or TF card or audio input Charging socket: 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 Enclosure: 1 Input Power(W): Less than25 W Bluetooth Version: 5.0 Playback Function: mp3 PMPO: 5W Impedance: 4 Ohm Output Power: 5W Support Memory Card: Yes color:Grey Material:plastic Package Contents: 1 x Bone Conduction Music Box 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 a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.