iPhone X/XS Battery Charging Case, ZeroLemon iPhone X/XS 4000mAh Slim Juicer Extended Battery Rechargeable Case for iPhone X/XS [Apple Certified Connector]-Black Extend 100%+ Power to iPhone X - The powerful 4000mAh Li-polymer extended battery can effectively provide 100%+ extra battery life to iPhone X, which is equivalent to add 12 + hours talk time or 7+ hours movie time. Apple Certified Connector: Built-in Apple Certified Connector works with all functions with your iPhone X charging case. 100% compatible with iOS 11, Apple Pay, and future iOS software updates. Ultra Slim Protection - ZeroLemon Slim Juicer protects your iPhone X from scratches and other daily wears and tears, yet small and convenient enough to fit easily in your hand or pocket. Please note wireless charging is NOT supported by this battery case. Know Before You Go - 4 LED Lights indicates battery levels and charging status. Integrated button allows you to choose when to charge for when you need it most. Zero Defect Guarantee - 365 days ZeroLemon Guarantee Warranty with Amazon 30 days Full Refund Guarantee; Lifetime Customer Support from ZeroLemon. 100% Zero Defect Guarantee.