4E 4E'S USA Head-Mounted Dental Loupes with Light 3.5X 420mm, Dual Rechargeable Batteries, Ergonomic Design, Clear Vision & Comfort - Silver

Comfortable Ergonomic Headband: Adjustable from 200mm to 240mm to fit various head sizes, reducing neck and back fatigue. Easy Operation: Simple and streamlined design allows effortless interpupillary and focal adjustments, catering to user preferences and enhancing efficiency. Brighter & Clearer: Features a portable LED headlight with adjustable brightness and includes two replaceable batteries for extended use, ensuring optimal illumination in any lighting condition. Dual Rechargeable Batteries: Comes with two rechargeable batteries for long-lasting power, offering uninterrupted use and reducing the need for frequent recharging. Perfect for Dentists and Hygienists: Working Distance:320-420mm; Depth of field: 100mm; Field of view: 90mm; making it ideal for both clinical and experimental applications. NOTICE: Please make sure the battery is full of charge before use, for sufficient brightness.