The bushnell 7x50 marine binocular is a necessary equipment item for boaters sailors and observations on the water it provides clear images in even the worst weather conditions from fog rain and ice and can handle the hazards of salt water exposure this hermetically sealed and nitrogen purged unit gives reliable waterproof and fogproof performance and even floats in sea water 100 waterproof fogproof o ring sealed and nitrogen purged to keep out moisture highly re