Compact and Lightweight: HM H8 USB charger adapter allows charging at home or in the outside via USB cable connection. Dual USB Port: Volta 3.4A charger comes with dual USB slot which means that you can charge two device easily with no hassles. Advanced Power Management, Intelligent fast charging supported. Smart Power Management and Device Protection : features over-voltage protection, over-heat protection, over-current protection, anti-static protection, short circuit protection. Give your devices the powerful and safe charging support they deserve. Built-in Smart Chip, Fast Stable charging and Wide Compatibility: Designed for wall sockets, Input AC: 100-240V 3.4A, 50-60Hz, Output DC 5V/3.4A. You can easily charge your smartphone, ipad, tablet, mp3 player, power bank and wireless Bluetooth headphones. Included: Micro USB cable.