I keep a gen.2 Lucid HD7 on a .458SOCOM rifle. I like everything about it except for the uncapped turrets. The 3rd generation HD7 just arrived and it has capped turrets.
This sight uses one AAA battery, turns on in auto mode but has manual brightness adjustments as well.
It is threaded for Killflash grid.
The choice of four reticles is useful for different weapons, perhaps a circle-dot for shotgun or chevron-BDC for medium range rifle.