1. Material: high-quality aluminum alloy material, surface wear-resistant process treatment, light weight and durable. 2. Design: Condensing head design, conical-shaped small diameter, can penetrate more four sides, smoother, not easy to imitate and identify items, and stronger wearing ability. 3. Brief introduction of light source: (1) White light: high brightness, clear texture, suitable for looking at carved and skinless jade, jade and other treasures. (2) Yellow light: strong penetrating power, suitable for looking at jade with skin, jade, pressed jade, and prying inside the rough stone when exploring. Look after the color is consistent with the natural color, if the color of the finished product is basically the same. (3) Violet light 395nm: mainly for the detection of fluorescent substances on the surface of amber beeswax jadeite (the light comes out with some purple, which will affect the detection effect). (4) Violet 365nm: pure light color, under normal circumstances, it is nearly white by naked eye. Objects with fluorescent substances appear bright blue, the color contrast is quite obvious, the results are intuitive and accurate, and it is suitable for the identification of fluorescent substances of amber, red sandalwood, beeswax, and glue. 4. Applicable to: identification of jade, jade, jewelry, beeswax, agate, currency, stamps, fluorescent agent, mask, cosmetics, etc. Specification: Name: 4 light source gem identification flashlight Color: Black Light source: 4 LED Power: 8W Lumens: 500lm Battery: use 18650 lithium battery Endurance: 2-10h Illumination mode: 4 levels of illumination mode (white light-yellow light-395nm purple light-365nm purple light) Waterproof grade: life waterproof Size: 133mm*23mm*21mm Net weight: 65g Gross weight: 78g Package:(No Battery) 1x Flashlight