Solar clock Solar Car Digital Clock with LCD Time Date In-Car Temperature Display for Outdoor Personal Car Part Decoration High-efficiency solar panels, super long battery life. Large-capacity built-in lithium battery, no worry in cloudy days. High precision LCD display. Built-in clock, date, week. Car interior temperature display. No charge, no on/off, automatic display. Specification: Power-on voltage: D-C 5V Working temperature: -20℃ +80℃ Storage temperature: -30℃ +85℃ Size: 95*80*27mm/3.74*3.15*1.06'' Weight: 65g Note: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. in the power-on state, long press the middle setting button for 3 secondsto enter the temperature setting, press the setting button again,thetemperature unit flashes, press the left and right buttons to select thetemperature unit, and then press the setting button to complete the settingIn the setting state, press the right button to enter the time setting, pressthe middle button, then press the left and right buttons to select changes,and press the middle button to confirm to complete the setting.In the setting state, press the right button to enter the month settingpress the middle button, then press the left and right buttons to selectchanges, and press the middle button to confirm to complete the setting.In the setting state, press the right button to enter the date setting,press the middle button, then press the left and right buttons to selectchanges, press the middle button to confirm the setting.In the setting state, press the right button four times to enter the yearsetting, press the middle button, then press the .left and right buttons to select changes, and press the middle button toconfirm to complete the setting. 3. Key Description In the setting state, press the right button five times to enter the factorysettings, and press the middle button twice continuously, the machinerestarts and restores the factory settings, except for the time, othersettings are restored to the factory state. The day of the week is automatically switched according to the yearand no setting is required. 4.This manual is for reference only, no notice will be given when theactual product is updated