The HS507C Micro Red Dot System is a pistol sized optic with an open frame with clear glass and a rugged 7075 aluminum housing. It is powered by a CR2032 battery and a solar back up. The HS507C will run up to 10 years on a single battery on setting 6, dot only. The multi-reticle system allows the operator to switch the reticle between a 32 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 32 MOA ring only all at the push of a button. The green LED projects all three reticles, so no re-zeroing is necessary. It features shake awake technology with last setting recall, parallax-free optical design with unlimited eye relief.