Brand Name: Fraternize High-concerned chemical: None Battery Capacity(mAh): 2000-4999mAh Origin: Mainland China Function: Power Case Certification: CE Compatible Brand: Apple iPhones Compatible iPhone Model: iPhone11 Compatible iPhone Model: iPhone 11 Pro Max Compatible iPhone Model: iPhone 11 Pro Material: Silicon Feature Powerbank: High quality Battery Charger cases Ultra Thin Backup Charger Cover: portable charger Case cover Battery Case: External Power Bank battery charger Back Cover: Battery Charger Case for iPhone 11 Silm shockproof charger Case: Power Case Protective function: Charging, current, short circuit Etc protection Input/Output: 5V 1500mA-1800mA for iPhone 11 Pro: 4000mAh for iPhone 11 Pro Max: 6000mAh for iPhone 11: 6000mAh