Samsung has relaunched its smartwatches alongside the much-hyped Galaxy S5, signalling a focus on smart wearables by tech's heavyweights. The FT's Paul Taylor looks at the big product launches from this year's Mobile World Congress.<br /><br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes