1. Wood lamp is a skin diagnostic light that can be used to detect skin problems such as vitiligo and psoriasis, allowing you to detect and monitor the condition . 2. The lifespan of LED is 40 times longer than that of UVA . Our Wood's use LED light sources, which have a wide illumination area, are clearer, more energy-efficient and more durable. 3. Two levels of light intensity can be adjusted, and the clear observation port allows you to obtain clear observation results. 4. Easy to use: one-button operation, no complicated steps, simple and convenient to use; no need for goggles, direct observation. Charging voltage: 5V-1A Power output: 5W Output voltage: 3.7V Built-in battery capacity: 1500mAh Visible lens diameter: 55mm1mm Working distance: 10cm3cm life: 15000 hours Visual lens magnification: 3 times 20% Colour:White Material:plastic Package Contents: 1 x Lamp 1 x storage bag 1 x USB Charging Cable 1 x English User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.