The RYOBI 18V ONE+ HP Brushless 15" String Trimmer is a true gas replacement, delivering more power than a 21cc gas string trimmer. ONE+ HP technology combines a powerful brushless motor, advanced electronics, and high performance lithium technology to provide more power, runtime, and durability with over 1 hour & 30 minutes of runtime using an 18V 6Ah battery (battery not included). As part of the Whisper Series, it is 28% quieter than gas, so you can cut any time of day without disturbing others. Tackle thick weeds & grass with the adjustable 13"-15" cut swath. A larger cut swath will give you maximum performance while a smaller cut swath gives you maximum runtime. Achieve maximum control with the variable speed trigger & easily change the speed with the 2 speed switch for optimal power/runtime. Conveniently reload your line in under 60 seconds with the REEL EASY+ bump-feed head. Best of all, it is part of the RYOBI ONE+ system where any 18V ONE+ battery works with any 18V ONE+ product. The RYOBI 18V ONE+ 15" String Trimmer is backed by the RYOBI 3-Year Manufacturer's Warranty and includes 18V 15" String Trimmer, Front Handle, Grass Deflector, SPEED WINDER, .080" Replacement Bulk Line, and Operator's Manual. Battery and charger sold separately.