With shock-resistance and corrosion-resistance, Mine Safety Flashlight offers professional-grade construction for the toughest jobs. It is impact-resistant to 7′. Spring-mounted bulb is shock-resistant and features a barrier wall. Built-in circuit breaker instantly disconnects contact between batteries and broken bulb. Industrial-grade flashlight is chemical-resistant, oil-resistant, gas-resistant, grease-resistant and water-resistant. Design also features durable polypropylene construction, an 8-lumen smooth beam with prismatic reflector, protected slide switch and consumer preferred comfort grip. Beam distance ranges up to 82′. Flashlight runs on two D batteries (sold separately). Battery runtime is 22 hours.