Product Description: duraMOBI Mini Wireless Bone Conduction Speaker with BT 5.0 Transform Anything Hollow into a Speaker: Experience the innovative power of the duraMOBI Bone Conduction Speaker, which turns any hollow object into a speaker. At just 4.3cm (1.69") in diameter, it is the smallest on the market, providing a unique and impressive sound experience wherever you go. Simply turn it on, connect via Bluetooth, and enjoy your music instantly. Different Surfaces, Different Sounds: Explore a world of sound possibilities with the Hum-Pro speaker's bone conduction technology. Experiment with various sound effects by placing it on different smooth surfaces such as mirrors, guitars, Kraft boxes, plastic storage containers, photo frames, sports headphones, or dashboards. Each surface offers a distinct auditory experience. Immersive Stereo Experience: Enhance your audio experience with true wireless connectivity. Pair two HumBird Pro speakers for a 2.0 surround sound experience, or connect multiple speakers in multi-speaker mode for stunning sound effects that fill any space. Enhanced Visual and Auditory Enjoyment: Elevate your music experience with the rhythm lamp mode. Activate it by pressing the power button four times after turning on the speaker. The RGB color-changing light effect adds a stylish touch, enhancing the ambiance and enjoyment of your music. Customize your sound with adjustable EQ modes—BASS, MIDDLE, TREBLE, and normal. Compact and Portable Design: Designed for convenience and portability, this speaker includes various accessories such as magnetic base stickers, a suction cup sticker, and a lanyard, offering multiple installation options. With its compact size of 4.3cm in diameter and 3.4cm in height, the speaker is easy to carry and use on the go, making it the perfect companion for any adventure. Experience the future of portable audio with the duraMOBI Bone Conduction Speaker, and enjoy a versatile, high-quality sound experience that adapts to your lifestyle.