Universal Dual USB Ports Fast Charger Home Adapter 2.1A Special Features: Simple design dual USB charger 1. High-efficiency, high cost-effective and portability, stable product quality 2. Protection: input, output over-voltage protection, short circuit protection, over-current protection and cleverly perfect protection 3. Working temperature: 0 to 40°C, 10-90% RH Storage temperature: -20 to 85°C, 10-90%, altitude <3000m 4. Reliability: dielectric strength, 3000V AC, 60 seconds 10mA, leakage current, 0.25mA max 5. Fine workmanship, good material, very easy to use Suitable for: tablet PC, phone, power bank, Bluetooth, speakers universal USB interface Key specifications: Input: AC100-240V Input voltage frequency: 50/60Hz Maximum output: 5V 2.1A Ports: USB*2 Output: 5V 3.4A Efficiency: 85% Size: 46x45x25mm