A:AnswerThese watches can have all the faces that Apple offers with the added bonus of exclusive Nike faces. These are a much better buy because of this fact, otherwise, ALL functions are exactly the same.
A:AnswerAre you asking GPS version vs cellular version because mostly both watch can be unlocked.!! GPS version uses Bluetooth to connect to the phone whereas cellular version uses its own internet as its having sim..!!
A:AnswerI’ve never measured specifically but I’d say mine disconnects from my phone about 50-100 ft away depending on if I’m outside or inside and walls are blocking the signal somewhat.
A:AnswerI checked the Apple website. Here’s their response.
Yes. The 38mm bands fit the 40mm watches. Apple Watch Series 4 comes in new sizes – 40mm and 44mm rather than 38mm and 42mm – the good news for Apple users is that the old watch bands fit the new sizes.Sep 12, 2018
Will 38 mm watch bands fit for the new 40… - Apple Community