Battery: built-in 18650 lithium battery 365 Light flashlight application range: identify jade, jade, amber, beeswax, blood amber, , etc. that are faked by injection glue, detect stains and wax agents in certain gems, identify antiques, calligraphy and paintings, porcelain, bronze imitations, and old books and calligraphy and paintings that have been repaired with glue Wick: 365NM light Lens: Battery life: 240-360 minutes, Weight: 0.10802650838 pounds, Manufacturer: tiyao