- all Apple Watches do the same thing- there is no functional difference between all 38 watches in the ranges

- the differences come down to style- size, materials used, look, wrist bands

The first choice is size- the Watch comes in 38mm or 42mm faces (measurement is the height of the front of the watch).

There are then three groups of Watches:

1: the Apple Watch Sport (least expensive models, made from aluminum) http://www.apple.com/watch/apple-watch-sport/

2: Apple Watch (the middle range, with the main body made from stainless steel): http://www.apple.com/watch/apple-watch/

3: Watch Edition (most expensive and made from precious material such as gold and diamonds): http://www.apple.com/watch/apple-watch-edition/

Once you decide on a range, you can then choose a band from that range- prices will vary depending on the band choice.

Here is a gallery on the Apple Store of the new ranges of Apple Watches:

You can begin to explore prices on the Store:

Here is a run-down of the ranges:

• Silver Aluminium Case with White, Blue, Green, or Pink Sport Band: $349 (38mm) / $399 (42mm)

• Space Grey Aluminium Case with Black Sport Band: $349 (38mm) / $399 (42mm)

• Stainless Steel Case with White or Black Sport Band: $559 (38mm) / $599 (42mm)

• Stainless Steel Case with Black Classic Buckle: $649 (38mm) / $699 (42mm)

• Stainless Steel Case with Milanese Loop: $649 (38mm) / $699 (42mm)

• Stainless Steel Case with Black, Midnight Blue, Soft Pink, or Brown Modern Buckle: $749 (38mm only)

• Stainless Steel Case with Black, Bright Blue, Stone, or Light Brown Leather Loop: $699 (42mm only)

• Stainless Steel Case with Link Bracelet: $949 (38mm) / $999 (42mm)

• Space Black Case with Space Black Stainless Steel Link Bracelet: $1,049 (38mm) / $1,099 (42mm)

• 18-Karat Rose Gold Case with White Sport Band: $10,000 (38mm) / $12,000 (42mm)

• 18-Karat Yellow Gold Case with Black Sport Band: $10,000 (38mm) / $12,000 (42mm)

• 18-Karat Rose Gold Case with Rose Grey or Bright Red Modern Buckle: $17,000 (38mm only)

• 18-Karat Yellow Gold Case with Black or Midnight Blue Classic Buckle: $15,000 (42mm only)

- Pre-Oders start on the 10th April

- The Watches start to ship on 24th April

At the end of the day it comes down to four questions: