Optical specificatoins* Illumination in 200mm working distance: =30000 lx Adjustable range * Fluctuation distance: 12.5mm * Direction of Illumination: Vertical ±45°adjustableNet Weight * Head lamp: 23g (excluding headband) Electrical specifications * Illumination Source: extremely bright light, 3W LED. Life 20000 hours continuous burn. * Battery: 3.6V Lithium battery (rechargeable) * Battery Run-time: >7 hours * Input Voltage: 110VAC/ 220 VAC * Maximum Power input: 10W * Electrical Safety Standard: IEC60601.1 class II equipment

* Lightest weight and most compact 3W LED unit. This light supplies bright, white, shadow-free light allowing the doctor to see tissue characteristics without distortion. * Enjoy the flexibility of operating the headlight using the rechargeable Lithium battery, can use without the direct power source. It is one of the most comfortable lightweight headlights and suitable for all kinds of surgery. * The headlight could be used when it is charging.Has low-battery indicator light. * Adapts to any Frame and Loupes of Zumax. * Smart design, HL8300 Headlight combined with SLF Binocular Loupes convenient for mobile diagnosis.