Knowing blood sugar levels is important for many people, but it usually requires uncomfortable and painful pricks. The Hela blood sugar testing watch changes that by instead reading your blood sugar levels from your sweat. Not only that, but this blood sugar test watch also monitors your heart rate, blood pressure, lactic acid, and more. All it needs to measure your blood sugar is a single drop of sweat on its bio nano sensor. Then, it can provide you with a reading in only three seconds. This totally painless wearable gadget also acts as an activity tracker, and it works together with a smartphone app to retain detailed information about past measurements. With a sleek design, it comes with a charging case that has a 30-day battery life and also acts as a wireless charger.