LED VOLTAGE DISPLAY: This SAE adapter has a built-in voltmeter. Detect and display the voltage when power is on. It is also a very convenient way to tell you if the connection is successful.
WIDE COMPATIBILITY: The SAE to USB adapter is designed for use on any 9-24 volt battery, and is used to charge any iPhone, GPS, Camera, digital cameras, or any Smartphone or device that may be charged via USB.
POWERFUL CAPACITY: With dual USB plugs, output 5V/2.1A & 5V/2.1A. This motorcycle charger lets you charge any two smartphones or tablet devices simultaneously, at top speed.
OVER-CHARGE PROTECTION: display the current detected by the intelligent circuitry while charging. Intelligent circuit design protects against excessive current, overheating, and overcharging. Ensure the charging safety.
WATERPROOF DESIGN: Cable length: 1M (40 Inches). Water and dust resistance by a rubber USB cover, protects internal circuit, effectively enhance its lifespan
 

Specification:
Color: Black
Material: ABS+PVC
Input Voltage: 9V-24V
Output Voltage: 5V
Output Current: 2.1A & 2.1A max.
Voltage Display Range: 12V-24V
Working Temperature: -40 to 70 (℃)
 

Package List:
1 x SAE to USB Adapter
1 x 1m SAE to SAE extension cable