Materials : Metal 100% NEW IN BOX Have 10 sect brightness for adjustment the red/green dot 2 hours auto shutdown after last key used Mount on any 20mm weaver standard rail Equipped with QD mount which is easy to set just. High shockproof, weather proof & Fog Proof model, functions in bad climate and different situation Strict quality control for G&P® Xenon product, excellent quality is ensured Magnification: 1x Size: 10x5x6cm (approx) Weight: 220g How it works? Press the UP or DOWN button and the unit turns on Press the UP and DOWN buttons to adjust intensity Press the middle NV button to change between red and green holographic pattern Press both buttons at the same time and the unit will turn off