@valerij Do you want it on contract or PAYG ? EE SIM cards are 3 in 1 sims and you just push out the part you need. What watch is this ? can you provide a link to it ?
@valerij , having taking a look at it, there is no reason why it should not work with any network, you just need a micro SIM card, EE SIM cards are three in one as @Chris_B has mentioned above.
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using Skype or another phone: +44 800 079 8586 or +44 800 956 6000.
You may need to put it in a mobile phone first to activate it (and make a chargeable event, text phone call, etc). In terms of the number, it should be on the pack that came with the PAYG sim
