Moto 360 2 Sport

Mobilefun has the Moto 360 2 Sport listed as being quite a bit cheaper than the Standard 360 2, Standard model is £269, Sport is £219 . I find this a little bit surprising as the Sport comes with a GPS chip in it, so I'm wondering if the specs will be scaled down in some other way, or if its just the actual watch strap, which is a lot cheaper?

Sport:
http://www.mobilefun.co.uk/motorola-...ack-p54780.htm

Standard:
http://www.mobilefun.co.uk/motorola-...her-p54778.htm