Koral 31.5" Micro-USB EL Charge & Sync Cable for Universal Smartphones- Retail Packaging - Black/Green Patented electroluminescent light technology shows a visible flowing LED light while your Device is charging The flow speed of the light represents the charge level of your Device Smart charge technology automatically shuts down the flow of power when the Device is fully charged Durable 31.5 length flat cable designed to be free from tangles and knots Compatible with most Android smartphones and tablets and supports both charging and syncing (Samsung Galaxy S4/S5/S6/S7)