Experience comfortable night's sleep with our bone conduction vibration Pillow Speakers. Say goodbye to ear damage with its unique design that protects ears. Both men and women can enjoy this innovative technology. They can run up to 24 hours after fully charged and stable and clear sound.Specification:Product name:Bone Conduction Pillow SpeakerProject type: Bone conduction sleep audioFunction: BT, timing, single channel and channel switching : ABSCharging method: TYPE-CColor: black, white, blue, pinkProduct size: about 13.2x5.2x1cm/5.2x2.05x0.39 inchesBT: 5.3Audio channel: left/right stereoSpeaker diameter: about 17MMBass diaphragm: /Distance: >10 metersExtended :Packing List:1 x Bone Conduction Pillow SpeakerNote:1. Due to the different display and lighting effects, the actual color of the product may be slightly different from the color shown in the picture. Thanks!2. Due to manual measurement, measurement deviation of 1-3cm is allowed.