Nekteck Battery Case 4000mAh Compatible iPhone 6 Plus / 6S Plus Battery Case External Protective Charger Charging Case Backup Pack Cover Juice Bank &ndash; Black The powerful 4000mAh Li-polymer rechargeable battery can effectively provide 100%+ extra battery life to your iPhone 6 Plus/ 6S Plus, which is equivalent to add 14 + hours talk time or 10+ hours web browsing time. Designed specifically for iPhone 6 Plus/ 6s Plus 5.5 Inch with full-body ultra slim protective battery case designed with minimum added bulk. Enjoy the comprehensive protection while still maintain the slim of your iPhone 6/6S Plus. Which means it's made specifically to fit with your iPhone 6 Plus (5.5 inch) so you can expect quality performance and reliability. Worry-Free of compatibility or safety issues. No errors whatsoever. Featuring sync-through technology that you can sync your iPhone to a computer without having to take the battery case off. Simultaneously charge your iPhone and battery case together with the included microUSB cable. The resilient design of the Nekteck iphone 6S/6 Plus battery case features LED battery level indicator that lets you know exactly how much power you have; and a softer side that safely holds your iPhone while providing easy access to all buttons and ports.