Feature:1. Aluminum Alloy Material: Constructed with sturdy aluminum alloy, this identification flashlight is both durable and lightweight, making it easy to carry.2. Multi Function Design: Equipped with three light sources (white light, warm light, and UV) to suit various needs and occasions.3. UV Identification: With a wavelength of 365nm, the UV light is specifically designed for quick and professional identification and examination of jewelry.4. Built In Battery: It comes with a high capacity 3000mAh lithium battery, ensuring prolonged usage. Provide you with the convenience of use.5. Convenient Operation: Controlled with a tail switch, it allows for easy and fast switching between light sources and brightness adjustments. Ideal for business, academic research, antiquing, collecting miniatures, or for portable use.Specification:Item Type: Gemstone Identification LightsMaterial: Aluminum alloySize: Approx. 146 x 25mm/5.75 x 0.98inBuilt in Battery: 18650 Lithium Battery 3000mAh (included)Light Source: White Light Yellow Light UV UV Light Wavelength: 365nmControl: Tail buttonCharging Method: USB Type CWeight: Approx. 147.00g / 5.19oz.Package List:1 x Flashlight1 x USB Cable