Descripiton: With dual led digital display, specially designed to check up real-time voltage for 2 electrical appliances at the same time, which clearly shows you the voltage readings and helps you to better monitor car voltage condition. Choosing high temperature resistant materials, no longer afraid of excessive temperature caused by deformation of poor quality plastics, resulting in circuit damage. Small and exquisite, more space-saving, more convenient and practical. Dual usb design, to meet the needs of your two devices at the same time charging, no longer worry about your power is not enough. Multiple protection, safe and secure, effective control of overload and heat, product performance is more stable. Dual fast charge design, two interfaces can simultaneously output and charge, to meet all kinds of mobile phones. Suitable for all types of vehicles, motorcycles, cars, SUV ,trucks. Specification: Product Name: Dual USB Charger. Material: ABS. Color: Black. Dispaly Color: Blue. Length: 5.2cm/2.0inch. Diameter: 5cm/2.0inch. Input Voltage: 12V-24V DC. Output Voltage: 5V DC. Output Current: 3.1A(1+2.1A) DC. Package Included: 1 X Dual USB Charger. 2 X Plug Protection