Features: 1.Portable and easy to install, with small size, convenient to use and with good performance. 2.The air outlet is fixed by a clip, which can be clamped on the air outlet fan blade, air conditioner socket or sun visor. 3.With backlight button, press it to light for about 5 seconds, even in dark places can be seen clearly. 4.Electronic clock and thermometer 2 in 1, which can meet your many needs. 5.Strict quality control and quality assurance, high safety factor, can be used with peace of mind. specification:Item Type: 2 In 1 Electronic Clock Thermometer Material: Plastic Size: Approx. 8.3 x 1.8 x 1.8cm / 3.3 x 0.7 x 0.7in Battery Type: 2 x button batteries (without batteries) Battery Model: LR44 Time Setting: Time setting electronic clock has A/B setting button Clock Settings: Press the A key for three seconds to enter the setting of the hour, press the B key to adjust the value, and then press the A key to set the minute (the minute is adjusted to 0 when the second is fast), and then press the A key to confirm and exit; When adjusting the value, press and hold the B button to increase the speed, and the setting time exceeds 60 seconds without any key press will automatically confirm and exit the setting Temperature Function: Automatic Temperature Measurement Range: -20-50 Accuracy: 1% Size: Approx. 8.3cm / 3.3in 1.8cm / 0.7in PackageList: 1 xElectronic Clock Thermometer 1 x Transparent Clip 1 x Black Accessories 1 x User Manual