Energi Sliding Power Case / for iPhone 5/5sThe ENERGI Power Case for the iPhone 5/5s is a sleek protective case with a built-in battery, which doubles your standard battery life. ENERGI is superior in design, material, quality and construction.The ENERGI Power Case is real world tested. So thin, it's hard to believe it packs an additional 9 hours of talk time. It adds only add 9mm to the thickness of an iPhone. We include 2 slim-line cases; 1 black, 1 colored (available in Lime, Red and Blue), which slides out of the charging sleeve so your phone remains protected when you don't need the extra charge. Once your phone is charged, simply remove the exterior charging sleeve to reveal a slim-line inner case for traveling light.Specs:• Battery: 2500mAh Lithium Ion battery• Dimensions: 5 5"L x 2.6"W x .35"D (139mm x 65mm x 9mm)• Weight: 3.35oz (95g), not including package and cable• Available for iPhone5/5s