Feature: 1. BONE CONDUCTION TECHNOLOGY: This under pillow speaker utilizes advanced bone conduction technology to deliver sound, providing a 360° immersive music experience without the need for wearing headphones. It allows you to enjoy music while sleeping without disturbing others. 2. EASY SWITCH TO BT SPEAKER: With just a click, this device can be switched to a BT speaker, allowing you to listen to wonderful music even when you're outdoors. It offers versatility for different settings and scenes. 3. PERFECT FOR ELDERLY ASSISTANCE: This device serves as an ideal aid for the elderly. The combination of bone conduction and air guided technology enhances phone call clarity, ensuring clear and crisp sound transmission. 4. BT SMART CONNECTION: With BT 5.3 technology, this device offers a stable and uninterrupted connection. It has a range of up to 10 meters, allowing for strong and reliable signal reception without any lag or buffering. 5. LONG LASTING BATTERY LIFE: Equipped with a large capacity built in battery, this sleep sound machine can last for approximately 24 hours on a full charge. Its long battery life ensures uninterrupted use and improved overall endurance. Specification: Item Type: Under Pillow Speaker Material: Plastic Color: Black BT: Built in BT Memory Card: Not included in the shipment Battery: Rechargeable lithium battery (500mAh) (included) BT Distance: Approx. 10m / 32.8ft Package List: 1 x Under Pillow Speaker