The shell is made of aluminum alloy materials, wear-resistant, anti-rust and anti-corrosion, good stability, durable. Good brightness and long service life. With power protection system, it can prevent overload and over discharge. Double-head flashlight has 4 light sources, meet different jewelry Identification needs. Built-in large-capacity lithium battery, which can be directly charged through the USB cable, long battery life, power consumption, and convenient charging. The flashlight is light in weight, small in size, compact in structure and easy to carry around. It is used to detect jade, jewelry, beeswax, agate, coins, banknotes, etc. Specifications: Material: Aluminum Alloy Size: 162x30mm/6.4x1.2in Battery type: built-in 3.7V lithium battery 1800mAh Running time: 2-3 hours Charging time: 3-4 hours Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x Jade Flashlight