Enhanced Viewing & Detailed Observation: This headband binocular magnifier features viewing technology for crisp observation. Comfortable & Lightweight Build: Constructed from sturdy ABS components, this head mounted magnifier is designed for extended wear without strain. Adjustable Focus & Single Eye Function: With a customizable distance of 0.85 9.84 inches, the two lens structure enables single eye viewing for better magnification. Alternate between eyes to reduce strain during prolonged usage. Stable Fit & Unrestricted Movement: The snug headband stays in place during use, enabling accurate two handed activities like circuit board assembly or engraving without unstable handheld viewing. LED Lighting & Rechargeable Design: Includes two adjustable LED lights with different brightness settings and replaceable yellow/ covers.