The moisture meter can quickly measure the moisture content of the grain. 1. [Bone conduction] Mini Bluetooth speaker can turn everything into a speaker. It provides a DIY sound experience by simply placing it on surfaces such as luggage, guitars, wooden tables, pillows, cartons, etc. 2. [Support pairing two speakers] Connect via Bluetooth. Two Bluetooth bone conduction speakers can be paired automatically for a truly wireless stereo experience. 3. [Principle of operation] Bone conduction technology converts sound waves into vibrations and eliminates large membranes, creating its own unique sound on the surface of each object. 4. [Multifunctional] Bone conduction Bluetooth speaker can play music, podcasts, support separate phone calls or meetings, play games or movies, and also serve as FM radio. 5. [Mini and portable] This wireless speaker has a diameter of about 4 cm, so you can put it in your pocket or bag and take it with you anywhere, anytime. It can be used as a gift for Christmas, Halloween, Thanksgiving, New Year. . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio Specification: Item Type: BT Bone Conduction Speaker Material: metal, ABS Diameter: approx. 4 cm / 1,6 inch Version BT: V5.0, A2DP, HFP Frequency Response Range: 120Hz-16KHz Charging Interface: Type C Output Power: 3 W Sound channel: dual channel (2 independent bone conduction transducers) Bone conduction transducer: built-in improved magnetic core and high-performance coil Battery type: 400 mAh lithium-ion battery (built-in) . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio List of packages: 1 xBT Bone Conduction Speaker 1 x Type-C Charging Cable 1 x Lanyard 2 x Foot Pad 2x instruction manual . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio Note: Connect and use . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio . TWS Wireless Bluetooth Magnetic Portable Audio