A powerful Heavy duty clipper designed for all day heavy duty use. Clipper will run continuously for one hour with a full charge. Maintenance free - no oiling or greasing of internal parts, detachable blades for ease of changing and cleaning. High speed 3600 strokes per minute. Break resistant housing. Kit includes: Durable case, rechargeable clipper with #10 Blade set (64071), charging base equipped with sensa charge, a unique charging system that will not overcharge the battery. (78926-040). The battery pack (78936-056). You can order extras of these for continuous clipping. One can be chargin while the other is used on the clipper. This are very quiet clippers and are highly recommended by veternarians and groomers.