Caffeine Charger is a second-floor coffee shop selling espresso in front of Gwangalli Beach in Busan. It runs its own espresso bar, and the coffee is strong in aroma and well balanced. Floor-to-ceiling windows look out on Gwangandaegyo Bridge and Gwangalli Beach, so you see the sea by day and the night view after dark. The seating is unusual, which makes sitting for a long time uncomfortable.