The Sytong HT-77 LRF has a full color day reticle and two switchable night reticle, 1 switchable to black / white night vision mode and the next switchable emergency vision mode that is easy on the eyes in night vision green mode, like the old night vision tube devices.
The HT-77 LRF-NV HD has a bayonet mount, in conjunction with an adapter on the suitable telescopic sight with a quick-release lock (easy to use), the HT-88 is also bulletproof up to 6000 J, i.e. up to cal. 9.3 or 300 Win Mag .
The HT-77 LRF range finder - wavelength: 905nm - max. measurement range: 1000m - measurement accuracy: +/- 1m