Fangrui Product Details 3d Surround Sound - Put It Under The Pillow, As If You Are There, Realistic 3d Stereo Sound Quality, Presenting You With An Extraordinary Listening Experience. Powerful 8-hour Battery Life - 400mah Rechargeable Lithium Polymer Battery, Fast Charging, Long Battery Life. Bluetooth 5.0 Mode - Adopt High-quality Bluetooth Chip, Equipped With High-performance Chip, Faster And More Stable, Low Latency And Low Power Consumption, Clearer Sound. Three-stage Timed Shutdown - Automatic Timed Shutdown In Three Sections Of 30/60/120 Minutes, Easy To Set, Sleep Peacefully. The Pillow - Vibration Playback, Exclusive Music, Watch Short Videos, Listen To Music, Not Disturb The Pillow. Bone Conduction Bluetooth Speaker Under The Pillow White Noise Sleep Aid Sound Bar With Led Display Timed Shutdown Tf Card Music Player. 6 Kinds Of Stress-relieving Sleep Sounds - 6 Series Of , Let You Say Goodbye To Negative Emotions, Different Sound Scenes Make You Feel Calm And Fall Asleep Peacefully. Colour:as Shown Material:plastic