Suppesses human odors from traveling downwind. This device emits small concentrations of ozone that safely reduces human odors in the air. Long-used in industrial settings, ozone is a proven odor-reducer. It will reduce nearly 100% of odors in a ground blind and deliver significant odor-reduction for stand hunters with its high-powered treestand mode. Its rechargeable lithium-ion HR battery (included) powers the HR-200 unit for five hours in ground blind mode and four hours in treestand mode. Its ozone-spreading fan is virtually undetectable to wary game. Nighttime-visible LED battery-level indicator. Easily mounts to a tree or blind. Lightweight, 1.7-lb. frame. Silent-touch controls. Includes HR-200 unit, rechargeable lithium-ion battery, battery charger and blind/tree mount. Designed to meet or exceed federal safety standards. Made in USA. Dimensions: 3.5"H x 7.7"W x 5.8"D.