Features Premium Quality Ultra Thin High-density lithium polymer battery cells & streamlined aluminum alloy housing ensure superior performance & reliability while making it ultra thin & smooth to the touch. High Capacity With up to 10, 000 m Ah of capacity, this power bank provides several times extra battery life to your smartphones, tablets or other USB (Universal Serial Bus)-powered devices. Universal Compatibility With the built-in Micro-USB cable & detachable USB (Universal Serial Bus) Type-C adapter, you can charge your device with a Micro-USB port or USB (Universal Serial Bus)-C port with ease -- no extra cables needed. You can also charge USB (Universal Serial Bus)-A powered devices, such as your iPhone, iPad or iPod, via the extra USB (Universal Serial Bus)-A port. Fast Charging Dual output design enables you to charge two devices simultaneously with a total output current of up to 3.1A & up to 2.1A per output. Safe & Reliable Built with premium circuit chips. Nine protections, such as overheating protection, short-circuit protection, over-voltage protection, over-current protection, over-charging protection, over-discharging protection, input reverse direction protection & reset protection, keep you & your devices safe. User Friendly Simply connect a device to automatically start charging without pressing any button. Gently shake the power bank & you will know the exact battery level at a glance of the 4 LED indicators. Automatically power off after disconnecting devices for about 25 seconds. Compact Portable Incredibly compact, slim & lightweight, easy to carry. It can be easily put into your wallet, pocket & bag. Tips: To save energy, disconnect your devices from this product & put the built-in Micro-USB cable & USB (Universal Serial Bus) Type-C adapter back when not in use.