This incredibly versatile bone conduction speaker, made with premium materials, offers a unique and exceptional sound experience in any setting. Transform any hollow core into a powerful speaker with ease, anytime and anywhere. Its bone conduction technology allows for customizable sound experimentation, comparable to using different musical instruments. Simply place it on various surfaces such as glasses, guitars, or photo frames to discover a wide range of sound effects. Additionally, this wireless speaker offers a seamless connection for a true stereo sound when two Hummingbird speakers are paired. We highly recommend using two connected speakers to enjoy a surround sound experience. Despite its compact size, this speaker can reach impressive volume levels of up to 115 decibels when placed on thin surfaces such as Halloween plastic boxes or buckets. Along with its multifunctional capabilities - including FM radio and hands-free calls - this bone conduction speaker is a must-have for music, gaming, and movie enthusiasts alike.