Cosmos Black 4 in 1 Dual Port USB Car Cigarette Charger W Voltmeter Ammeter Thermometer Rapid Charge for Iphone 6 Plus / 6 / 5 / 5s / 5c,and More 5v USB Charge Device Automatically displays charging voltage, charging current, and car internal temperature (in Celsius "Degree C", but not in Fahrenheit); Dual USB ports; charges your mobile devices including the iPad (max speed), iPhone (max speed), iPod, HTC, Galaxy, Blackberry, MP3 Players, Digital Cameras, PDAs, Mobile Phones. Input 12-24V; Output DC 3.1A/5V (one port up to 2.1A& one port 1A). Over-current protection, automatically cut off the power supply when the current is greater than the current setting safety, over-heat, over-current, and over-charging protection. Compact design, size: 3*1.6*1.2 inchs, weitht: 0.9oz, easy to use, easy to carry.