Samsung External Battery Pack for GS6 Edge+ - Non-Retail Packaging - Gold 3400Mah capacity for extended use and multiple charges Supports standard Wireless charging speeds, 5V/1A power output Custom engineered for your Galaxy S6 edge+ Check to see how much battery you have left using a four-level LED indicator Official Samsung Lithium Ion batteries are built-in to ensure an optimal charging experience for a range of Samsung or non-samsung devices