The 2800 is barely bigger than a lighter and is perfect for a quick full smartphone charge. All Swiss Mobility chargers come pre-charged and ready to use out of the box; compatible with Android and iOS mobile phones, cameras & more. 2800 mAh Universal Power Pack with built-in safety light. High Speed Safe Charging. Integrated charge indicator telling you how much charge remains in your charger. Up to 9 hours additional Talk Time. Pre-Charged & Ready for Smartphones and Tablets Premium Soft-Touch Finish. Ultra Compact Design with Safety Light.