product manual:  1.Can be powered via USB connection (rechargeable). It also supports 4 AAA batteries.  2.Suitable for business travel, travelling at home and office, easy to carry and easy to use. 3. With simple operation, just press the switch button to work.  4.Adjustable brightness: If you want to work in a large area, you can choose to adjust the brightness of the enhanced UV lamp.  Technical Parameters:  Project Name: LED Charging UV Sanitizer Light  Product weight: 144g.  Voltage: USB 5V Duration: 5 hours of continuous discharge. Size: 320 * 40 * 35 Lamp life: 20000 hours Power: 2W killing time: 5 seconds Tube: LED deep UV lamp beads UV wavelength: UV-C (300 nm). Battery: 4 AAA batteries. USB interface Lithium battery charge: 1-2 hours
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