Svbony Linear Polarizer Filters Medium Dovetail Clamp and speed information SMS function

and speed information SMS function support to text the information to another radio with the same DNA protocol

and better visibility of faint guide stars

The watch has a built-in 400mah lithium battery and can stand by for 50 hours

Lower settings are ideal for night-time use

Svbony Linear Polarizer Filters Medium Dovetail Clamp and speed information SMS functionSVBONY 1. 25'' Polarizing Filter Linear for Telescope Name: SVBONY 1. 25'' Polarizing Filter Linear for Telescope Astronomy & Eyepiece Increasing Contrast Reduce Glare Increase Detail Description: The Svbony 1. 25" Polarizing Filter is high quality anodized aluminum, optical glass polarizing filter designed to reduce the amount of light entering your eyepiece. You can progressively dim the view when observing a bright object, such as the Moon or