Sambi 4000mAh Power Bank with 10W Wireless Charging and Bluetooth Speaker It is at least as strong and appealing as the goods they support. This wireless charger for smartphones makes it simple to enjoy the fun of digital products. You can charge your compatible smartphones with this fashionable accessory without having to connect them to a USB port or wall charger. To use a Qi charger, simply place your phone or other Qi-enabled device on it. Alternatively, it can be used as a power bank, providing enough power to run even the most demanding devices, or it can be connected via Bluetooth to play music wherever you are. Details 4000mAh is the capacity. Micro USB 5V 2A, 9V 2A input USB 5V 1A output Wireless: Maximum 10W Bluetooth