Yoyorule Dual USB 5V 2A 6x 18650 Power Bank Battery Case Box Charger (Blue) Material: plastic. Size:15*7.5*2cm. Input: Micro USB DC 5V 1A. Output: DC 5V/2A or DC 5V/1A Battery Type: 18650 lithium battery is 3.6-3.7Vbatteries not included Two USB output interface: 1.0A interface and 2.1A interface. Charging two your devices synchronously be compatible For iPhone, iPad, iPod,USB Digital Devices and most cell phones.