Review on EMallee Charger Dock 2 Pack for Galaxy Watch 4/3: Compatible with Samsung Galaxy Watch 4 Classic, Watch 3, Active, and Active 2 - Essential Accessories by Phillip Samuel

These are pretty good replacement chargers. Haven't used them very extensively so I don't think I can comment on charge speed/heat dissipation yet, but they seem to fit a standard charger. I feel like they could make the magnet a bit stronger to hold the watch in place, but then again a weaker magnet will allow you to remove the watch with one hand without moving the charging puck from where you have him. The plastic, cables and connector appear to be OEM quality. I could easily mistake this charger for the original, although I believe the original could be made from slightly better materials.