SadoTech 2.1-Amp Single USB Port Wall Charger w/ Swivel Plug, Travel Friendly Designed for all Apple iPhone, iPad, iPod, Samsung Galaxy S4, S5, S3, S2, Note 3, Note 2, Amazon Kindle Fire HD/HDX Phone, Bluetooth Speakers and Headsets, Google Nexus series and all Android Devices (white) This is a fast charging AC adapter for Apple iPhone series, Samsung Galaxy series, Amazon Kindles and any other Android based devices. It can take AC input 100~240V with 50/60Hz frequency. It gives DC output of USB 5V at up to 2.1 Amp maximum, USB cables are not included. It is fully compatible with USB port smartphones or cell phones, iPhone 5s, 5c, 5, 4s, 4, iPad, iPod, USB enabled MP3, MP4 players, Samsung Galaxy S4, S5, S3, S2, Kindle Fire HD/HDX, Nook and majority of tablet devices. The charging efficiency of the SadoTech USB wall charger is greater than 75%.