Don't think this listing is eligible. Its not the UK version. Samsung offer states' Purchase an eligible Samsung product (UK version sold and dispatched by Amazon UK) before 27.06.2019 23:59 BST and claim up to £170 from Samsung Electronics (UK) Limited within 30 days from the date of purchase. Level of reward will vary based on purchased product. Claims must only be made by the end user customer. Maximum 4 Claims per household.'
I know it's a smart watch, but it's still quite big for a lady - depending on the lady of course
The reviews suggest it's not the UK version (which is £268.95 on Amazon) so you may hit an issue if you need to supply the serial number/IMEI.