I have an old smart phone . Can I utilize its Bluetooth and display -LRB- hardware -RRB- and other required components to create a device which I can pair with my Android device that can create a something like a smart watch ?
Should a novice runner buy watch specifically designed for running -LRB- like Garmin -RRB- or a smart watch which connects with phone like a -LRB- IPhone watch -RRB- ?