It also powers the system if you choose to operate without a battery

the Sport Band is durable and strong

Providing a magical wireless experience and a fit that’s comfortable all day

And with no charging or pairing required

and Precision Finding to guide you to your iPhone

38mm Silver Link Bracelet Non-PPT It also powers the systemCrafted from the same 316L stainless steel alloy as the case, the Link Bracelet has more than 100 components. The machining process is so precise, it takes nearly nine hours to cut the links for a single strap. The custom butterfly closure folds neatly within the bracelet. And several links feature a simple release button, so you can add and remove links without any special tools.