Thanks for the response. I will contact garmin to see if they will diagnose

Hello, I purchased a Garmin sports watch in december 2016 from Decathlon for £159. It has recently stopped working, will not charge or turn on. I approached Garmin first who gave me some basic suggestions (which failed) and then told they could fix it for £100 as it was outside its 12 months warranty. I carried out some research which suggested that I should be protected by the Consumer Act based on my thoughts that a watch of this type should not spontaneously break after 16 months. I have contacted the retailer who initailly advised that there was nothing they could do as the product was outside 12 months warranty but have now accepted that they would review if I sourced a report that supported my claim that the watch was effectively not fit for purpose. Is anyone able to advise if this is the right approach? Is it likely to be worth my while? Who would I go to for such a report? Appreciate any suggestions. Regards Antony