Apple has announced its Apple Watch Series 3, the first to include LTE connectivity. This means that you can now stream music, make phone calls, and send texts without being tethered to your phone.

All models of the Series 3 include a new dual-core processor that Apple says is 70 percent faster, thereby allowing Siri to actually talk. This new W2 chip is said to deliver 85 percent faster Wi-Fi while also being 50 percent more power efficient, which will prove important because of cellular connectivity depleting battery more rapidly. (Apple says the Watch should have up to 18 hours of battery life.)

The new Apple Watch Series 3 costs $399 with cellular connectivity, and $329 without it. It's available in either 33mm or 42mm case sizes. Orders start on September 15th, but the watch will be available on September 22nd. You can check on carrier availability here. The Series 1 now starts at $249. The company didn't mention the Series 2, which is likely being replaced by the non-LTE Series 3.