Cobra HG S300 Highgear External Noise-Cancelling Speaker Cobra quality performance - the highgear external speaker is designed to offer an exceptional combination of unsurpassed power handling, great sound, rugged construction and stunning design. Great sound, from a great looking speaker. High quality noise cancelling - superior heavy duty noise cancelling external speakers featuring professionally designed coated speaker cones that can handle the power. You'll always hear your calls loud and clear with this high quality speaker. Rugged and strong design - fully loaded 15 Watt power handling capability, A 4-inch speaker with 5.5 oz. Magnet, shock resistant construction, and a metal mesh grille. This speaker is not only designed to perform well, but its built strong and made to last Ideal for pa capable CB radios - ideal for CB radios with public announcement capabilities to increase volume and maintain sound quality. Comes complete with mounting hardware and a ratcheted swivel bracket for 180 degrees of angle adjustment. 3.5mm Headphone jack - ideal for team drives with your partner. You can now allow them to enjoy silenced during a drive while you stay up to date, and fully informed while connected to the speaker through headphones.