Features 1.Bone Conduction Technology: Sound is conducted to the inner ear through the bones, no need to wear headphones, not only can you enjoy music, but also relax and fall asleep. 2.Ergonomic Design: Bluetooth bone conduction pillow speaker adopts ergonomic pillow design, which comfortably fits the curve of the neck and is not easy to slide, so you won't feel uncomfortable when sleeping. 3.Multiple Playback Methods: In addition to Bluetooth 5.0 wireless connection to your cell phone or other devices, it also supports inserting a memory card to play music. No need for additional equipment, you can enjoy music anytime and anywhere. 4.Clear Sound Quality: Stereo bass bone conduction speakers can provide clear sound quality, allowing users to immerse themselves in the beauty and dynamics of music. 5.Healthy and Harmless: Bone conduction technology does not act directly on the eardrum, reducing damage to the ear, especially suitable for long time wearing. specificationItem Type: Bone Conduction Pillow Speaker_x000D_ Material: ABS_x000D_ Connection: Bluetooth 5.0_x000D_ Wireless Distance: Approx. 10m / 32.8ft_x000D_ Storage: Supports Up To 64GB Memory Card (Not Included)_x000D_ Battery Type: Built In 400mAh Lithium Battery_x000D_ Playback Time: 20 Hours (70% Volume)_x000D_ Charging Time: 2 Hours PackageList1 x_x000D_ _x000D_ BoneConductionPillowSpeaker 1 x Data Cable 1 x Instruction Manual