Did all sorts of measurements including a treadmill test holding on to the stabilizers to check with no arm movement. This device is accurate. Just completed a treadmill test, 45 minutes, 3.2 mph, very accurate, manually counting about 120 steps per minute. 120x45=5400Accusplit measured 5443 steps, including several gymnastics steps, so the device is very accurate, especially when worn on the center front of the waistband.
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