Meet the Intrvl Band: a smart wearable device for high intensity interval training. It lets you add intervals to any workout and start burning more fat and calories. To get started, select your function and tap the Go button. When you sense the first vibration, you will have time for a short rest.
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The Intrvl Band has a LED display and 3 preset work+rest periods. The battery life lasts up to 4 days. It also serves as a regular stopwatch. Like what you see? More information is available here.
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