Apple has announced two new smartwatches: the Apple Watch Series 6 and Apple Watch SE. Usually, each new Apple Watch slots in at the top of the company’s lineup, making the older ones a little less expensive as a result, but this year’s cadence is different. The new Apple Watch SE looks very similar to the new $399 Series 6, but it lacks a few of its highlight features to reach a lower $279 price.

So which one should you buy, and how do these smartwatches compare to each other? Should you spring for the Series 6 over the SE? What about the Series 5 that came out last year? And are you really missing out on much if you just get the cheapest Series 3 Watch? It’s getting complicated to suss out the differences, so we’re going to spell out the specs below to make your buying decision a little more clear.

Apple has a comprehensive look at all of the specs of each model right here, but if you just want a quick look at specs, check out the table below. And just to note: we haven’t used the Series 6 or Apple Watch SE yet, so don’t let these specs solely guide you; numbers don’t always tell you everything you need to know about tech.