This looks like a pretty good deal for a beautiful watch which I bought for £70 in December when it was on sale. It is refurbished and comes with 12 months Argos warranty.
Argos is selling the same new watch for £99.99 + delivery so having it for £50 seems pretty good.
Link for the new watch: http://www.ebay.co.uk/itm/Rotary-Mens-Black-Chronograph-Bracelet-Watch-/360871219195?pt=UK_Jewelery_Watches_Watches_MensWatches_GL&hash=item540599cffb
Following specs by the seller:
The Rotary chronograph watch is all about accurate timing and the enhanced bezel adds further functionality. This watch has been designed in black to create an understated stealth look, perfect for anyone wanting subtle style and a modern design.
Model number GB03778/04.
Stainless steel case.
Black stainless steel bracelet.
Double lock clasp.
Date and day display.
Manufacturer's lifetime (if serviced every 3 years) guarantee.
Catalogue number 583/9740