★Professional waterproofing - high purity nitrogen protection, high sealing performance, internal pressure can withstand 35Kpa overpressure, can be submerged 1.5m deep, ★ This binocular is designed for bird watching, hiking, , hiking, travel, football basketball or any sporting event, concert., ★Comprehensive precision multi-layer coating—high transmittance, sharp image, wide field of view, large diameter of exit, long exit distance, low light environment such as dusk, dawn,the target can be observed clearly and comfortably., ★All-optical glass lens - full-surface multi-layer broadband coating, the image is not color cast, the lenss super light transmittance and concentrating function make its low-light micro-light visible, ★Using all-metal structure - sturdy and le; rubber armor, shock absorption, anti-slip design, strong ability to withstand bumps and vibration, can withstand more than 20 gravitational acceleration