USB Charger Dual Ports Digital LED Car Ammeter 10A Voltmeter DC 30V Meter Gauge

USB Charger Dual Ports Digital LED Car Ammeter 10A Voltmeter DC 30V Meter Gauge Description: Grind arenaceous flame retardant material High-precision current and voltage LED display Over-loaded protection Full-time attention for car battery Excessively high and low battery voltage will influence the service life of car battery. Multifunction product with ammeter and voltmeter Make your cellphones fully charged in your car easily. Allows you to simultaneously charge 2 separate devices. Apply to all USB charging mobile phones or other electronic products. Multi-output USB interface can also charge for multiple electronic products. Output short-circuit electronic automatic protection and restoration. Compact and small, perfect for travel use. Compatible with: iPhone, iPhone 3G, iPhone 3GS, iPhone 4, iPhone 4S, iPad, iPad 2, iPad 3, The new Pad, iPod touch series, iPod Nano series, iPod classic series or other 5V charging input voltage devices, such as, Bluetooth headsets, MP3, MP4, Nokia, Samsung, Motorola mobile phones, etc. Specification: Material: Environment Friendly Nylon Current Range: 1-10A Voltage Range: DC 6V-30V Size: 48.6x26mm Color: Black;Red Light Measurement error: