Characteristics The observed images are clear and upward on the fundus. Halogen bulb with even illumination can show the true colures of ocular issues. Smart Design, convenient for mobile diagnosis. Equipped with special charger, quick and convenient recharging, against over recharging. Zoom illumination adjustment. Specifications: Illumination Source: 3.5V, 2.8W mini halogen bulb Power Source of Recharger: Input Voltage: 220V ±10%V Input Power: 8VA Diopter Compensation: 0,±1,±2,±3,±4,±5,±6, ±8,±10,±12,±16,±20,-25(D) Illumination Form: big spot, small spot, slit, central network, red-free The observed images are clear and upward on the fundus. Halogen bulb with even illumination can show the true colures of ocular issues. Smart Design, convenient for mobile diagnosis. Equipped with special charger, quick and convenient recharging, against over recharging. Zoom illumination adjustment. CE and ISO and FDA Certified.