Peanut Butter and jelly. Spaghetti and meatballs. Strawberry and Watermelon. Some flavors were just made to go together. That's why you'll love Strawberry Watermelon extra Strength 5-hour ENERGY shots. Like all of our flavors, it's packed with vitamins, nutrients and caffeine for the alert, energized feeling you want, but with zero sugar and four calories.