Dual USB interface， can simultaneously charge two devices， the maximum output to 3.1A. Elegantly designed， extremely resistant， prolonged use of deformation， no rust. Nickel-plated contacts， shrapnel scratch， anti-oxidation， strong conductive properties; new shrapnel buckle bit firmer， more resilient， more convenient to use. Automatic adjustment function， automatic identification equipment required for battery charging and output current， effective protection devices. Wide application compatibility， suitable for most cell phones， mobile devices. Product Description: Material: high quality PC + electronic components Color: Black / White Interface Type: Generic USB interface Interface: 2 Output Current: 3.1A Scope: iPhone / Samsung / Nokia / HTC / LG / Motorola / Huawei / MP3 / MP4 / MP5 / GPS / Tablet PCs