Lens shape: Round
Lens diameter (mm): 30.8
Effective focal length (mm): 22.70
Raylite Duo Stand Magnifiers rest on top of the material being viewed, making them appropriate for longer reading tasks. They feature an Easy Press switch that allows the user to easily switch them on and off without hand and finger strain or pain. There are 2 brightness settings: High brightness provides more illumination for rooms with poor lighting and for larger lens sizes, while Low brightness is meant for bright rooms and smaller lens sizes.
Automatic Switch Off after approximately 35 minutes conserves battery life in case the light is accidentally left on. The LEDs provide bright, energy-efficient, environmentally friendly, and longer battery life. The special diffuser lens evenly spreads the LED light for the best possible view across the entire lens. The easy-access battery compartment makes battery changes quick and simple— even for those with dexterity challenges. Uses two 'C' batteries (not included). White frame.