There are 4 display modes: ① Only show time ② Only display temperature ③ Only display voltage ④ Time, temperature and voltage are displayed alternately. After the display mode is set, there is no need to reset it next time, and there is a memory function With temperature error manual correction function, setting range -5~5℃ Built-in imported ultra-long life memory battery, the car will continue to travel after power off。 Extremely small size: length 133mm* height 23mm* width 26mm Font color: blue (pictured) Material: Plastic 1、Imported high- and low-temperature resistant automotive-grade plastic materials are used, and the high and low temperature range is -40~75℃, not afraid of exposure, high temperature does not deform, low temperature does not embrittlement. 2、 The display device adopts imported long-life high-brightness LED digital tube, the font light is soft and not dazzling, the brightness is moderate and not dazzling, no matter under the bright sunlight or the bright moonlight, the current time can be clearly and accurately displayed. 3、 Integrate three functions of time, temperature and voltage in one. 4、 It is easy to install, with 1 piece of double-sided adhesive with 1mm thickness. 5、 The streamlined appearance is highly consistent with the original car interior style. 1*Voltmete