Feature:1. HIGH BRIGHTNESS: Jade appraisal light has high brightness and high penetration, allowing you to see the internal structure of jade stones very clearly.2. POWERFUL LIGHT GATHERING: Identification flashlight for indoor or outdoor use, you can easily see your surroundings in the dark. More powerful light gathering.3. LONG LIFE SPAN: Jade detector lamp is made of 18650 lithium battery, which has a long life, energy saving and does not require frequent battery replacement.4. RUGGED AND DURABLE: Jewelry identification flashlight is made of aluminum, sturdy and durable for long term use and more professional identification.5. COMPACT AND LIGHTWEIGHT: Jade flashlight is compact and lightweight, can be carried in pockets, handbags, drawers, suitable for outdoor activities, such as travel, hiking, etc.Specification:Item Type: Identification FlashlightMaterial: AluminumProduct Size:Diameter: Approx. 22mm / 0.9inzBody Length: Approx. 130mm / 5.1inPower Supply Battery: 1 x 18650 Lithium Battery (Not Included)Light Source: White Light, Yellow Light, Violet Light 365nmControl: Tail Button AdjustmentGross Weight: 77g/2.7oz.Package List:1 xIdentification Flashlight (Without Batteries)Note:Please allow some error due to manual measurement.