Lightweight ABS construction with no optical lens and adjustable head straps for extended wear No optical lens included Durable, lightweight ABS body for everyday use Adjustable head straps provide a comfortable, secure fit for prolonged hands work USB powered and rechargeable head mounted magnifier USB powered with rechargeable operation for convenient power on the go Rechargeable magnifier headset designed for portable, hands use Four bright LEDs deliver clear illumination to illuminate fine work areas Designed for precise inspection and delicate repairs Trusted by professionals in watchmaking, jewelry, small arts, and electronics for detailed inspection and delicate repairs Realistic, closeup viewing to help reduce mistakes and improve accuracy during intricate tasks Key attributes and performance Function: headmounted magnification with builtin LED illumination Compatibility: USB powered, compatible with standard USB power sources Size and fit: adjustable head straps for secure and comfortable wear Material: lightweight ABS for durability and ease of use Lighting: four bright LEDs provide consistent illumination in tight or dim workspaces Practical use scenarios Watchmaking and jewelry work: inspect tiny gears, screws, settings, and stones with both hands for precise assembly and adjustment Electronics and assembly: examine solder joints, connectors, and PCB traces on small circuit boards Medical and small craft applications: inspect small instruments, labels, or detailed components in clinical or hobby settings, and perform delicate model making or intricate labeling tasks