Svbony H-Alpha 7nm Filter Astronomy Accessories 5 Notification Modes: Customize notifications

5 Notification Modes: Customize notifications with vibration

You can plug in any 3

giving the restaurant a quieter environment

· Working voltage: DC3

Buzzer + light

Svbony H-Alpha 7nm Filter Astronomy Accessories 5 Notification Modes: Customize notificationsOptical high precision double sided polishing to ensure that the parallelism is higher than 30 inch and high flatness 1 4; to ensure that IT does not affect the image quality Precision double sided optical coating; non two piece glue ; To effectively improve the transmittance and cut off depth Ion source assisted coating technology (IAD), to improve the density of the film to ensure that the filter wavelength minimizes the impact of temperature caused