Features:INTELLIGENT DIGITAL DISPLAYLED display, upgraded intelligent protection chip, real-time detection of battery voltage to prevent battery loss.INTELLIGENT SHUNTThe intelligent control chip provides the required voltage and current according to different devices, with good output stability and improved efficiency.UNIVERSAL DESIGNVoltage display 12V/24V to 220V, common design for cars and trucks, compatible with a variety of models, and power supply to multiple devices at the same time, stable output.APPLICABLE EQUIPMENTSuitable for car vacuum cleaners, driving recorders, car refrigerators, laptops, SLR cameras, car air pumps, razors, tablets, car fans, shavers, mobile phones, etc.SECURITY PROTECTIONS9 layers of security protection, upgrade the intelligent protection chip, effectively protect the stable and safe operation of electronic products. LIGHTING HOLESIt is equipped with double lighting holes, which is more convenient to use, it only supports the power supply of vehicle equipment, and does not support the heating and lighting function. Specifications:Material: ABS flame retardant materialColor: blackType: 1(without USB), 2(with 4 USB ports), 3(with 4 USB ports, voltage display)Size: about 15.8 x 9 x 3.2cm/6.22 x 3.54 x 1.26inch(length x width x height)Cable length: about 100cm/39.37inchRated input voltage: 12V/24V universalRated output voltage: 12-220V 24V-220V DCConversion efficiency: about 90% or more12V use range: 11.6V-14.8V24V use range: 23.2V-28.4V Package Included:1 pc x car power converter Note:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement. Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.