Advanced Bone Conduction Technology: Experience clear, immersive sound without ear fatigue as the pillow speaker utilizes bone conduction vibrations. This innovative approach ensures that even your family will not disturb you as you indulge in your personal soundscape. Designed for Restful Sleep: Specifically crafted as a sleep-inducing aid, this pillow speaker leverages soothing music to promote quicker sleep and enhance sleep cycles. It's perfect for everyone from adults to calming babies, improving sleep quality for better health. Versatile Playback Options: Effortlessly switch between the built-in 32GB TF card for standalone play and Bluetooth for wireless streaming, with over 200 songs available. Extended Playtime: Equipped with a 400mAh battery, enjoy up to 15 hours of continuous audio playback. The pillow speaker offers a lengthy standby time of up to 150 days and features customizable sleep settings for personalized musical sleep therapy. User-Friendly Design with Bluetooth 5.3: Stream your favorite audio effortlessly within a 10-meter range using the latest Bluetooth technology. The pillow speaker features an LED power display for easy monitoring of battery life and supports simple USB-C charging for convenience. Built-in 2 bone conduction speakers, which are known as bone conduction vibrators. They resonate and produce sound, allowing you to feel a slight vibration when you hold them in hand. Two sound effect modes are available: music mode for songs and audio mode for listening to books. The music mode delivers a heavy bass stereo sound effect, while the audio mode is tailored for listening to books, novels, children's picture books, stories, and more. Color: Silver-gray two-color gradient Material: Aluminum alloy shell Package Contents: 1 x Bluetooth Pillow Speaker 1 x USB cable Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual item. The measurement allows an error of +/- 1-3cm.