SMB-07 Smart Bone Conduction Sleep Aid Under Pillow Music Box Wireless Bluetooth-compatible Speaker - Blue 【Innovative Sleep Aid】This smart bone conduction music box is specially designed to enhance sleep quality without disturbing others or causing ear discomfort. 【Easy to Use】Simply place the device under your pillow and turn it on to enjoy soothing sounds without the need for earphones or speakers. 【Multiple Modes】Features Bluetooth-compatible connectivity,TF card support,and built-in white noise mode for versatile usage. 【Convenient Controls】User-friendly buttons for power,play/pause,mode switching,volume adjustment,and track selection. 【Auto-Off Timer】Set the device to automatically turn off after 60 minutes for worry-free use throughout the night. Specifications: Product size: 15.5*3.6*1.2cm Charging voltage: 5V/1A Working voltage: 3.7/4.2V Battery capacity: 300mAh Bluetooth-compatible version: 5.4 Bluetooth-compatible distance: 10 meters Interface: Type-C Charging time: 2 hours Playing time: 8 hours Charging voltage: 5V/200mA Package included: 1 x Under Pillow Speaker 1 x Charging Cable 1 x English Instruction Manual