Rechargeable Under-Pillow Bluetooth 5.4 Bone Conduction Sleep Speaker TF Card Transform your sleep experience with our innovative Under-Pillow Bone Conduction Sleep Speaker. Designed to be hidden under your pillow, this device uses bone conduction technology to transmit sound directly to your auditory nerve, allowing you to listen to music or white noise without harming your ears or disturbing your partner. It offers a private music experience, customized for soothing sleep. Enjoy HiFi surround sound with holographic acoustic tri-frequency equalization. The speaker features Bluetooth 5.4 for fast and stable connection, supports TF card mode (up to 128GB), and includes 10 built-in sleep aid sounds such as rain, waves, lullabies, and nature sounds. With an LED display screen for clear operation, timed shutdown function, long-lasting 300mAh battery (up to 8 hours playback), and convenient Type-C charging, this lightweight and portable speaker is your perfect companion for a good night's sleep. Key Features Bone Conduction Technology: Transmits sound through the pillow via vibration, directly to the auditory nerve without damaging eardrums, ensuring a private listening experience. White Noise & Sleep Aid Sounds: Built-in with 10 soothing sounds including rain, waves, heartbeat, lullabies, birds chirping, pond frog chirping, music box, and light music. Bluetooth 5.4 Version: Provides fast, stable, and reliable wireless connection to your devices. HiFi Surround Sound: Delivers holographic acoustic tri-frequency equalization for an immersive audio experience. Supports TF Card Mode: Play your favorite audio directly from a TF memory card (supports up to 128GB). Timed Shutdown: Set a timer for automatic shutdown, allowing you to rest assured and sleep through the night. LED Display Screen: Clear and visible display for easy operation and mode selection. Long-Lasting Battery Life: Built-in 300mAh lithium battery offers intelligent energy-saving for up to 8 hours of playback. Type-C Charging Interface: Convenient and modern USB Type-C charging. Lightweight and Portable: Compact design, perfect for travel or home use. Easy Controls: Simple button interface for power, volume, track selection, mode switching, and timer. Core Functions Bone Conduction Technology (2PCS voice black technology) White Noise Reduction (Built-in 10 sleep aid sounds) Bluetooth 5.4 Version (Fast & stable transmission) HiFi Surround Sound (Holographic acoustic tri-frequency equalization) Support TF Card Mode (Maximum support for 128GB) Timed Shutdown LED Display Screen Long Lasting Battery Life (Intelligent energy-saving 8-hour playback) Lightweight and Portable Specifications Product Type: Bone Conduction Bluetooth Sleep Speaker Technology: Bone Conduction Connectivity: Bluetooth 5.4 Audio Playback: Bluetooth Streaming, TF Card (up to 128GB), Built-in White Noise/Sleep Sounds (10 types) Display: LED Screen Battery: 300mAh Built-in Lithium Battery Playback Time: Approx. 8 hours Charging: USB Type-C Features: Timed Shutdown, Volume Control, Track Control