BeltBlaster PRO Personal Waistband Amplifier, 5 Watts, 1 1/2 lb. Light, belt worn, battery powered public address system with headset mic, lapel mic, protective transport case, rechargeable batteries, AC adapter and neoprene "fanny pack" case featuring an adjustable belt. Reduces vocal strain and stress. Unique "fanny-pack" design. Perfect for indoor or outdoor use. Simple volume control with a built-in on/off switch.