The Pocket Sound Blaster, a compact and portable device that produces sounds resembling a loud truck air horn. Despite its powerful sound, this innovative gadget is small enough to fit in your pocket, making it perfect for on-the-go use. Simply blow air through the side hole to trigger the rubber diaphragm, which vibrates as the air pressure repeatedly increases and discharges. With the ability to produce different sounds by lightly touching the diaphragm, the Pocket Sound Blaster offers endless entertainment and educational opportunities. Please note that colors may vary, and the device measures 7.6 cm tall x 3.8 cm diameter (3 x 1.5 inches).