- Power supply for Amazon Echo Dot via the socket ,- Ideal for quickly charging several devices via USB at the same time ,- Mains supply of 100V-240V suitable for worldwide use in conjunction with a country-specific adapter ,- Smart and safe charging: overcharge, overvoltage and short circuit protection - Number of USB Ports: 2 ,- Charging Current: 3100 mA ,- Output Voltage: 5 V V ,- Colour: Black ,- Recommended Use: Home Assistent 2 years legal warranty only