Industry's First Magnetic Charging Cover. Osight introduces a pioneering magnetic charging cover featuring a battery display that reveals the precise battery levels for both the cover and the optic, making uncertainty certain. Boasting a 0.94 x 0.85-inch lens, this optic ensures precise targeting even amidst recoil. The 3 MOA dot stands out clearly for quick and accurate dot acquisition. Turns off automatically after 10 minutes of inactivity, wakes it up in an instant. The auto-sensing mode chooses the best brightness for you, with 10 daylight levels and 2 night levels in manual mode and lockout mode, catering comprehensively to all usage scenarios. IPX6 waterproof. Both the cover and the optic feature a rechargeable high-capacity battery. Optic: Rechargeable Lithium Polymer 170 mAh. Cover: Built -In Rechargeable Lithium Polymer Battery 800 mAh. By adopting the most common industry-standard mounting footprint (Ruggedized Miniature Reflex, 407c/507c footprint) for optic cuts, Osight ensures versatility and ease of integration.