Place of Origin: China Brand Name: OEM Model Number: JY_LC170/ JY_LF180 Power Source: manual Warranty: 1 Year After-sale Service: Free spare parts Material: Plastic, Glass Shelf Life: 1years Quality Certification: ce Instrument classification: Class I Safety standard: EN55015:2019./A11:2020 Product name: dental loupe & light Magnification: 3.5x or 2.5x Color: Black, Silver, Red, Blue Depth of field: 90mm(2.5x), 80mm(3.5x) Field of View: 100mm(2.5x), 60mm(3.5x) Working distance: 320-420mm Battey: Rechargable Working voltage: 3.3-4.2V Charger standard: America standard plug/European standard plug Using life: 10000 hours