• Double the usage time for your iPhone 4 and 4S and helps users fully utilize their iPhone to complete daily tasks, such as Talk, web, text, video, music and gaming, without worrying about always having to recharge
• Featuring Apple's coveted "Made for iPhone" certification, this powerful smart battery case has passed various lab test to ensure safety and reliability
• Designed to its minimum form factor, plus a 2 piece slide-on detachable design. Only add the bulk when you need extra juice
• Swappable battery module enables endless power supply for your iPhone with additional batteries (purchased separately)
• Comes with a ultra-thin back cover which converts the bulky power case to a stylish slim case
• The durable and stylish case offers the full protection of a hard-shell case and will protect your iPhone from bumps and scratches, so your phone will look and function like new
• Fully functional, easily access all of your controls, as well as speaker and microphone
• Adds up to additional 6 hours of talk time, 30 hours of music playback, 6 hours of web browsing and 240 hours standby

Shipping Note: Eligible for shipping to all 50 states

Warranty: 1 Year uNu