If the watch has lost charge, connection or been turned off then I'd suggest to ask the airports customer service to ask if it's been handed in or if CCTV picked anything up.
Aside from that check any insurances to see if your covered for a claim.
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.
Thank you. The airport havent received it in their lost and found. I was hoping that there would be a way to lock it, if it has been stolen.
I will enquire about the CCTV but I'm not hopeful.