Magnification times: 20*

Glasses materials: Three kinds of materials are optional for you: common glasses (green glasses), optical glasses (white glasses), optical son-mother lenses (double multiplication: bigger ones are 5* while the smaller ones are 10*)

Light source: 22W circlip fluorescent lamp

Lenses diameter: 127mm

Power source: AC 220V/110V (220V is acquiesced, if you want to chose another one, please give an order)

Power plug: Chinese-standard plug base with three spigot.(you can give an order to make other kinds of plug as you wish)

Warranty period: 1 year