Gard Pro Health Smartwatch 2 The case is 1.50 inches wide, 1.77 inches high and 0.43 inches thick. Gard Pro Health Smartwatch 2 The case is 1.50 inches wide, 1.77 inches high and 0,41 inches thick. Gard Pro Ultra The case is 1.71 wide, 2.24 inches high and 0.54 inches thick. Gard Pro Ultra 2+ The case is 2.02 inches wide and high and 0,51 inches thick. Further, the Health Series straps are adjustable from 5.5 inches to 9.45 inches in circumference. The Ultra series are adjustable from 6.3 inches to 11.02 inches.