1. Powerful, doubleheaded 4LED four light sources (white light, light yellow, 365 purple light + 395 purple light), six gears, meeting the needs of different jewelry identification.2. USB charging, can be used with power banks, laptops, charging heads, with large-capacity built-in batteries, long-term use Equipped with power protection system to prevent overload and excessive discharge.4. Made of highquality stainless steel and aluminum alloy, with a smooth surface, good texture, beautiful appearance, sturdiness and durability, heat resistant and pressure resistant, antifall and antibeating.5. Wide range of applications, suitable for identification of jewelry, jades, etc., and also suitable for currency checking, outdoor lighting, camping, etc.3. High-quality LED light beads, high power, convenient to use, long service life, up to 100,000 hours.