Among other impressive features, the Huami Amazfit Bip S lightweight smartwatch has up to 40 days of battery life. So it’ll last for at least a month before you need to worry about recharging it. Additionally, this Amazfit watch weighs only 31 grams, meaning it’s comfortable to wear during exercise and sleep. However, it’s made with high-quality materials like stainless steel. Available in four fun colors—Red Orange, Carbon Black, White Rock, and Warm Pink—the Huami Amazfit Bip S silicone strap is sure to fit your style. Plus, made through a cleaning process, the wristband is both soft and resistant to dirt. And the case’s two-tone design lets you get the best of both colors on its polycarbonate material. This smartwatch even has a built-in BioTracker PPG heart-rate sensor so you always know how hard you’re pushing yourself.