The dual USB US Standard travel charger is convenient to take along as a travel charger, compatiable with most USB powered device, cellphone Mp3 Mp4 etc. This adapter can charge 2 USB devices simultaneously, portable, ideal for travel. High efficiency and low energy consumption. Input: AC 100-240V, 50/60Hz. Output 1: DC 5V 2.1A (2100mA) ;Output 2: DC 5V 1A (1000mA). Your logo is welcome.