Best 3-in-1 Multi-function High Speed USB Charger for Your Car
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High quality high speed USB Car Charger + Battery Voltage Tester + FM Transmitter.
High speed and smart charging
3.1A smart high current
5V/3.1A dual USB charging:Smart current split charging Widely compatibleThe safest USB car charger ever
Over temperature protection
Anti - electromagnetic interference
Constant voltage & constant current
Short circuit protection
Over voltage protection
Can be used on most cars which voltage is between 12V and 24V (Please don't use it if your car's voltage is higher than 24V)Working as Battery Voltage Tester: test the voltage of your car's battery at any time
Working as FM transmitter: Two working modes Beautiful and High quality
Shipped directly from the manufacturer. 100% Satisfaction GUARANTEED!