2 in 1 Dual Car Charger LED Digital Display with Blue Light Voltmeter

2 in 1 Dual Car Charger LED Digital Display with Blue Light Voltmeter   Features:Works great as a replacement or extra dual USB charge in car switch panel; with red LED light Voltmeter.Over-heated; over-current; over-charging protection; charging will be automatically stop when battery is full; easy to use and install.Compact design 2in1 Car USB Charger and Voltmeter; great for charging and voltage checking purpose.Compatible with popular mobile devices USB 2.0;any device including digital cameras; PDAs; mobile phones and USB accessories. Specifications:Case color: BlackIndicator light color: BlueInput voltage: DC 12 - 24VMeasure voltage: 6 ~ 28VOutput voltage: DC 5VOutput current: 4.2ACable length: approx.14cmSize of Drill: 37.2mm * 21.2mmDimension: approx.45mm x 24mm x 50mm (including the size of pins) Package Content:1 x USB Charger with Voltmeter (As picture Show)2 x 14cm Cable