What does apple watch series 7000 mean? Is it series 1 or 2?

It is Series 0, the first generation of Apple Watch. On series 1 and 2 it say on the back exactly like that: "series 1" or "series 2". 7000, it is the name of the aluminium alloy.

Hi

7000 series refers to the aluminium material used in certain Apple Watch models including 1st generation, Series 1 and Series 2 models.

Some differences that you may find helpful to note include:

• Apple Watch (1st generation) models have a single core processor.
• Newer models - in the Series 1 and Series 2 ranges - have a faster, dual-core processor.
• Series 2 models also have:
  • A higher level of water resistance.

    The watch can be worn, for example, when shallow water swimming and is also more resistant to water than other models during general daily use.

  • A brighter display (twice as bright as 1st generation and Series 1 models).
  • Built-in GPS.

    This can be used to track workout route maps for certain outdoor workouts when the paired iPhone is not also taken along and can also be used to help locate a lost watch (subject to it being connected to a trusted Wi-Fi network).

• Aluminium models have Ion-X glass (these watches are lighter in weight than stainless steel models of the same case size).
• Stainless steel watches have a sapphire crystal, which is more scratch resistant than Ion-X glass.

All Apple Watch models are able to run the latest software (watchOS) version. You may find the following resources helpful when choosing an Apple Watch:

• About Apple Watch water resistance - Apple Support
• http://www.apple.com/watch/
• http://www.apple.com/apple-watch-series-2/
• http://www.apple.com/watch/compare/