Compact, Affordable Voice-Only Amplifier: The CoxBox Mini provides voice-only amplification in a compact product designed to be used on its own, or in partnership with NK performance measurement products. The affordable price point lets you purchase multiple Minis to meet your needs, and gives you the option to own their own. The Mini is designed to be worn, keeping your hands free. A rugged rotating belt clip allows you to attach it to your clothes or gear bag strap, and the optional arm band is perfect for steerpeople or coaches.