"The Oster Professional Fast Feed Cordless Pet Clippers feature the same performance you know and love from the iconic Oster Fast Feed with a long-lasting lithium-ion battery for cordless use. The ergonomic design is perfect for professional groomers who cut pet hair all day. Use it with the 12-foot cord while plugged in, or go cordless. The long-lasting lithium-ion battery provides extra-long battery life, with over 120 minutes of run time on a 100-minute charge. With a durable, stainless steel blade that adjusts from #10 to #30, and a powerful Whisper Quiet pivot motor, these Oster pet clippers are designed to last longer and cut easily through all coat types. Use the adjustable lever to cut with precision at any hair length. Adaptive speed control automatically adjusts to maintain power for an even cut when cutting dense coats. Ideal for cutting and fading of all types of fur."