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What is the FD?
FD series is the front-end day&night vision clip-on, which is aiming to help hunters to hunt in the night. What’s more, if you change the eyepiece of FD device, it can also be transform into a monocular and rifle scope. FD is a 3-in-1 device.
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How many models are there in the FD series?
We only have FD1 and FD1-LRF at present, the difference between them is whether the device has LRF or not.
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Do I need to calibration the FD series ?
Normally, calibration is not required. But if the aiming point shifts after you mount the clip-on on the traditional scope, then you need to enter the retical adjustment in the menu to adjust.