1It is waterproof and mildew resistant and will not be affected by daily use in rainy or humid environments. 2Metal lens barrel, outsourcing rubber, exquisite and comfortable feel, beautiful and generous, fine workmanship, easy to use. 3The coating adopts multilayer vacuum high light transmittance film, strong light transmittance and high definition. 4Tripod connection hole, you can connect a tripod and use phone to watch the scenery in the distance, metal material, strong and delicate. 5Used for bird watching, watching sports games or concerts, outdoor travel, admiring the foreground, etc.