Feature:1. [Bone Conduction] Mini Bluetooth speaker can turn anything into a speaker. Provides you with a DIY sound experience by simply placing it on surfaces such as luggage, guitars, wooden tables, pillows, cardboard boxes, etc.2. [Support Dual Speaker Pairing] Connect via Bluetooth. Two bone conduction speakers Bluetooth can be paired automatically, which will provide a truly wireless stereo experience.3. [Work Principle] Bone conduction technology converts sound waves into vibrations and eliminates large diaphragms, creating its own unique sound on the surface of each item.4. [Multi Function] Bluetooth bone conduction speaker can play music, podcasts, support separate phone conversations or meetings, play games or movies, and also serve as FM radios.5. [Mini And Portable] This wireless speaker has a diameter of about 4cm, so you can put it in your pocket or bag and take it with you anywhere, anytime. Can be used as Christmas, Halloween, Thanksgiving, New Year gift.Specification:Item Type: BT Bone Conduction SpeakerMaterial: Metal, ABSDiameter: Approx. 4cm / 1.6inBT Version: V5.0, A2DP , HFPFrequency Response Range: 120Hz-16KHzCharging Interface: Type COutput Power: 3WSound Channel: Dual Channel (2 Independent Bone Conduction Transducers)Bone Conduction Transducer: Built in Enhanced Magnetic Core and High Performance CoilBattery Type: 400mAh Lithium Ion Battery (Built in).Package List:1 xBT Bone Conduction Speaker1 x Type C Charging Cable1 x Lanyard2 x Foot Pad1 x Instruction ManualNote:Manual measurement, please allow some errors.