Swiss-designed, portable and rechargeable. This powerful charger features a super high-capacity of 6,000 mAh, an elegant black metallic finish with a minimalistic design, five built-in safety levels, auto shutdown and a patented digital LED display indicating the percentage of power left. The dual USB ports (3.1A max total) can efficiently charge two devices simultaneously. Simply connect your mobile devices to the charger via the included cables to charge them. The refined power-saving technology provides many hours of extra battery life and is compatible with most popular mobile devices.