This LED pen light is a compact, durable instrument designed for medical and inspection tasks. It offers two white light levels to support different needs while providing a reliable, hands-free lighting solution. Key benefits - Two white light levels for versatile illumination - Low level white light suitable for pupil detection - Brighter white light suitable for general inspection, delivering a complete and rich illumination - Reusable and battery powered - Can be powered by inserting a battery after opening the cover - Batteries are not included; you need to supply your own - Magnetic and hands-free design - Exquisite structure protects the LED - Strong magnet allows attachment to iron or steel surfaces - Clip provides a comfortable grip for everyday use - Durable, medical-grade construction - Made from high-quality aluminium alloy - LED light integrates a pupil card and a ruler for convenient measurements Use scenarios - Clinical pupil checks and basic eye examinations - Home health assessments and patient monitoring - Field inspections or repairs where hands-free lighting is beneficial Specifications and features - Function: pupil detection with low level white light; general inspection with higher level white light - Compatibility: battery powered (batteries not included); insert battery by opening the cover - Material: aluminium alloy - Special features: pupil card and ruler integrated with the LED head - Performance: magnetic attachment to iron/steel surfaces; clip for comfortable handling This description stays true to the original product’s functions and design while presenting clear, practical benefits and real-use applications.