This is the isometric resistance trainer that provides a muscle-strengthening upper body workout that is gentle on joints. Users simply pull or push on the static handlebars without moving upper body joints, creating the same strength-enhancing resistance as free weights but without the strain or detrimental impact. Ideal for improving bone density and mitigating muscle loss, the device allows users to create their preferred resistance, it has a programmable timer, and it monitors applied force and displays the readings on the integrated backlit LCD, allowing users to set goals and determine progress. The device enables up to 23 exercises that strengthen and tone the arms, shoulders, chest, and back. Requires one 9-volt battery. 8" L x 6" W x 2" D. (2 1/2 lbs.)