Description 1. Revolutionary Bone Conduction Audio: Experience unparalleled comfort and privacy with our under-pillow sleep speaker. Featuring advanced dual bone conduction technology, it transmits sound directly without covering your ears, creating a personal, undisturbed soundscape. Enjoy true left and right channel stereo surround sound, perfect for immersive listening sessions without disturbing anyone nearby. 2. **Expansive Storage & Versatile Playback**: This innovative sleep companion supports up to 32GB TF card expansion, allowing you to curate an extensive library of personalized sleep aids and calming melodies. Seamlessly switch between TF card and advanced Bluetooth 5.4 playback modes. Furthermore, enjoy dual sound effects optimized for both engaging audiobooks and serene music, catering to all your nighttime listening preferences. 3. : **Premium Craftsmanship & Optimal Size**: Meticulously constructed from high-quality ABS and soft fabric, this speaker is designed for both comfort and a discreet presence. Its compact dimensions are 9.6cm x 9.6cm x 1.1cm (approximately 3.78" x 3.78" x 0.43"), ensuring it slips effortlessly under your pillow without being noticed, making it an ideal choice for a restful night's sleep. 4. Intelligent Custom Timer: Take full control of your sleep environment with our intelligent automatic shutdown timer, offering an impressive range of up to 995 minutes. Whether you need a short lullaby or an entire night of soothing sounds, the timer can be precisely set to your preference. The clear LED digital display provides instant visual on settings and status, making it easy to manage your sleep schedule. 5. **Exceptional Endurance & Seamless Connectivity**: Powered by a robust 400mAh battery, this sleep sound device delivers an outstanding playback time of up to 16 hours on a single charge and an extreme standby time of 150 days, ensuring your nights are never interrupted. It utilizes Bluetooth 5.4 for a highly stable and efficient wireless connection, coupled with a convenient Type-C charging port for rapid and universal power replenishment. Package list Speaker *1 Charging cable *1