You probably love your smartwatch, but you’re going to love it even more when you pair it with the AURA Strap smart Apple Watch band. This gadget boosts the power of your Apple Watch by tracking your hydration, body composition, and more. Using bioimpedance analysis, this device measures fat and muscle mass in your body so you have a better picture of your health. What’s more, it lets you track your hydration levels whenever you want, helping you stay healthy. Because this smart band works with a companion app, it lets you set goals, measure data, and track progress. Something incredible about this smart Apple Watch band is that it has a six-month battery life. And all you have to do is replace the coin battery when it runs out.