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 at home. 2. The lifespan of LED lamps is 40 times longer than that of UVA lamps. Our Wood's lamps 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 easily 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: φ55mm±1mm Working distance: 10cm±3cm Light source 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.