Main Feature: Material: High-quality aluminum alloy, surface wear-resistant treatment, lightweight and durable. Design: Condensing head with conical-shaped small diameter for deeper penetration and smoother light output, offering enhanced durability and resistance to imitation. Light Source Description: White Light: High brightness with clear texture, ideal for examining carved jade, jadeite, and similar items without skin. Yellow Light: Strong penetration, suitable for inspecting jade with skin, pressed jade, and rough stones to assess internal structure. Helps evaluate color consistency with natural tones. Violet Light 395nm: Designed for detecting fluorescent substances on amber, beeswax, and jadeite surfaces. Emits a slight purple hue which may affect detection clarity. Violet Light 365nm: Pure output, appears nearly white to the naked eye. Objects containing fluorescent materials glow bright blue, providing clear contrast for accurate and intuitive identification of substances in amber, red sandalwood, beeswax, and glued materials. Applications: Suitable for identification of jade, jadeite, jewelry, amber, agate, currency, stamps, fluorescent agents, masks, and cosmetics. Specifications: Name: 4 Light Source Gem Identification Flashlight Color: Black Light Source: 4 LED Power: 8W Lumens: 500lm Battery: Requires 18650 lithium battery (not included) Runtime: 2-10 hours Illumination Modes: 4 modes (White Light, Yellow Light, 395nm Purple Light, 365nm Purple Light) Waterproof Rating: Life waterproof Size: 133mm x 23mm x 21mm Notes: - Slight LED heating during use is normal. - Manual measurement may result in a size variation of 1-3 cm. - Product color may vary slightly due to lighting and screen differences. Package Includes: 1 x Flashlight (battery not included)