Features: .Transparent VFD clock #transparent bottom VFD clock screen # transparent shell. .You can see the time and day of the week simply and accurately. Use temperature compensation chip. .When the power is turned off, the brightness is automatically adjusted. You can also manually set a fixed brightness. .The accuracy of DS3231 travel time should be determined by Baidu on its own. .Power supply interface is TPYE C interface, plug in at will, the charging head can be used for power supply. .Setting description: Press the key to set, press the set key to enter the setting hour, minute, second, year, month and day, brightness auto manual, manual brightness value. .The size is 10.3 x 4.5 x 4 mm; Still two-color VFD Specifications: .Material: Acrylic + Components .Product Dimensions: 10 x 4.5 x 4cm .Product Weight: 350g .Package Dimensions: 15 x 10 x 10cm .Package Weight: 500g .Packing: Box Package Content: .1 x VFD Clock