1. Lightweight integrated design, soft and comfortable headband, adjustable height and width 2. Advanced optical design to avoid the influence of reflection, vision and observation 3. Multi-directional close-range adjustment knob and light control for a comfortable viewing angle. 4. Dust-proof and reflective lighting filter, keep clear lighting and observation ability for a long time; 5. Small size, easy to disassemble. 6. There are 4 speculums, powered by 2 AAA batteries. (Batteries not included)
