Gary picked up a second hand New Balance runner's watch and he needs to get a USB charger for it. Leo says that NBMonitors.com is where he can go if it uses a proprietary connector. It uses a Pogo pin plug, though, and that means he can't just pick up a third party charger.
If Gary can find out what model number it is, he may be able to go to eBay and pick one up. He should definitely get it from New Balance, though.