DescriptionName:twinkling star red laser pointer Dimension:13.4x162.00mm Technical Parameter: Fixed focus, red dot facula and Transformable twinkling star continuous output and working time over 5000 hours Output Wavelength:650nm Output Power:1mW Working Voltage:DC=3.0V Trigger Voltage:DC=2.3V Working Current:I<280mA Working Temperature:20 - +35 Storage Temperature:-20 - +60 Appearance and Color: Rubber Black (according to the request of customer) Function: can be used as indicator, gift.