Inspired by bold, classic margarita flavors, Corona Hard Seltzer Seltzerita is a tasty, gluten-free, spiked seltzer in 12 oz slim cans, available in Classic Lime, Peach, Mango, and Strawberry flavors. *Per 12 fl. oz. serving of average analysis: Calories 130, Carbs 4 grams, Protein 0 grams, Fat 0 grams. Relax resonsibly®. Corona Hard Seltzer Seltzerita™. Hard Seltzer with Natural Flavors and a Splash of Real Juice.