1. LED Light Source:This product is equipped with an advanced LED light source, which offers high brightness and clear, uniform illumination. Even when facing printed content in extremely small fonts, you can easily read and magnify it under its light. This ensures that your visual experience 't be affected by dim light under any lighting conditions. Whether you're reading at night or in an indoor environment with insufficient light, you can clearly focus on every textual detail. 2.Detachable Light Source Box:The light source box features a detachable design. It is simple and convenient to operate and easy to take out. This considerate design makes the whole process of replacing batteries, cleaning the light source, or storing the product much easier, enhancing the convenience of use. 3.Freely Adjustable :The can be adjusted freely. Whether you're reading on a desktop, looking down at precision objects, or working at different inclined angles, the light can be accurately projected to the desired position, providing the best lighting conditions for your observation and operation. 4.Suitable for Glasses Wearers:Even if you wear glasses daily, you don't need to worry about using this product. This head - mounted magnifier fully considers the needs of this group. Its specially designed structure allows it to co - exist harmoniously with glasses, providing great convenience for users with poor eyesight. You can enjoy the magnification function easily without taking off your glasses. 5.Rotary - adjustable Headband:The headband adopts a rotary - adjustable design, which can fit most people's head closely and comfortably. Long - term wearing 't cause a sense of tightness or discomfort. Whether you're reading for a long time, focusing on handicraft creation, or performing complex and precise operations, it can always maintain a stable wearing state, providing you with a continuous and comfortable using experience. Dual High - brightness LED Bulbs:Equipped with two high - brightness LED bulbs, it can illuminate the observation area comprehensively. Every detail can be clearly presented in this bright light. Whether you're checking for minor part defects or appreciating the details of delicate handicrafts, you can see everything at a glance without missing any key details. Power Supply: The product is powered by 2xAAA batteries (batteries need to be prepared separately and are not included in the package). The size is moderate, neither too large to affect carrying and use nor too small to affect operation and observation experience. Adjustable Circumference of Headband: The adjustable circumference range of the headband is 21.26 - 27.17 inches (54 - 69cm), which can fit the head circumferences of the vast majority of people, ensuring wearing comfort and stability. Color: As Shown Material: Metal+Plastic Package Contents: 1 x Magnifying glass 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.