Two wireless bone conduction speakers that pair automatically for true wireless stereo, delivering a 5.0 surround sound experience when used together. Compact yet powerful performance: small, lightweight design with up to 115 dB output. You can adjust the sound quality according to common settings. For results, place thin objects such as halloween plastic boxes or buckets under or around the unit. DIY sound on different surfaces: bone conduction technology enables a DIY listening experience. Test and enjoy different sounds by mounting the speaker on various surfaces, almost like playing different instruments. Surfaces include glasses, guitars, paper boxes, plastic storage boxes, photo frames, sports headphones, and dashboards to create a variety of effects. Easy setup and compatibility: Bluetooth wireless connection with automatic pairing between the two speakers—no wires needed. Use scenarios: Home stereo setup: use two units to achieve immersive, stereo audio in a living space. Creative sound design or education: place on different surfaces to explore how material and placement alter tone. Portable demonstrations or onthego listening: place on surfaces such as dashboards or containers to broadcast sound while remaining aware of your surroundings.