iPhone 6 Battery Case, [MFI Apple Certified] Trianium iPhone 6 Portable Charger (4.7 Inches) [Black/Silver]-3500mAh External Power Bank iPhone Protective Charging Case Back Heavy-Duty [Inlaid Metal] HEAVY-DUTY rugged iPhone portable charger battery case provides lasting power and protection for the iPhone 6 (4.7). PROTECTION IS #1 with the Trianium battery case. Features corner, screen, and frame protection - with metallic back plate for extra-ordinary durability. POWERFUL 3500mAh battery capacity provides over 150% power for the iPhone 6. RESILIENT design of the Trianium iPhone Portable Charger cases features LED battery level indicator, easy access to ports and tough 2-piece design. MFI certified by Apple; Offered with one year hassle-free warranty by Trianium. SECURE Locking Mechanism: Connected rotating pins unlock outwards to remove the top piece for installation of the iPhone for added power.