Lepow U-Stone Series 12000mAh External Battery Pack, Power Bank & Portable Charger for iPhone 6 Plus, 6, 5, 4, iPad Air, iPad Mini, Samsung Galaxy S6, S5, and other Smart Devices -- Khaki Powerful 12000 mAh capacity that weighs in at 11 3/8 ounces; Red Dot Design Award Winner for its unique and timeless design Attractive design with a brown textured exterior; Shakable battery life display It has 4 LED status lights located on the top that indicate the battery charge level. Great energy conversion - higher than 80% for better efficiency Using Lithium polymer battery technology, can be recharged 500+ times