3 in 1: USB Charger + LED Display Voltmeter + LED Display Thermometer <br> <br> <strong>Features:</strong> <br> Unique cigarette lighter design. Plug and play. <br> 12-24V voltage universal for car￡?SUV￡? ATV￡? truck￡? tractor￡? boat and bus￡? etc. <br> 2.1A output current￡? can charge for iPod￡? for iPhone￡? for iPad￡? for GPS and NAVI. <br> LED digital display can indicate vehicle battery voltage from 8V to 36V. <br> LED digital display can indicate the temperature in car from -10?? to 80??. <br> <br> <strong>Specifications:</strong> <br> Brand: WUPP <br> Material: ABS <br> LED display color: red￡? blue(optional) <br> Display mode: temperature / voltage (dispaly in turn￡? <br> Input voltage: 12-24V <br> Output voltage: 5V??? ? <br> Output current: 2.1A <br> Measurement of voltage: 8-36V <br> Measurement of temperature:-10??-80??. <br> Package size: 13.1 * 8.2 * 4.2cm / 5.2 * 3.2 * 1.7in ? <br> Package weight: 39g / 1.4oz <br> <br> <strong>Package List:</strong> <br> 1 * Voltmeter