The RYOBI 40V HP Brushless 21" Self-Propelled Mower and 40V HP Brushless 16" String Trimmer offer powerful, versatile lawn care solutions. The 21" Self-Propelled Mower delivers more power than a 170cc gas mower, with two 40V 6Ah batteries for up to 75 minutes of runtime, handling up to 3/4 acre. The CROSS CUT Multi-Blade System ensures excellent mulching, side discharge, and bagging. The SMART TREK self-propelled technology adjusts speed to match your stride, reducing fatigue. The CUT COMMAND CENTER offers control over speed, turbo mode, and runtime monitoring. Its One-Touch folding handles allow compact storage, and it's compatible with all RYOBI 40V batteries. The 40V HP 16" String Trimmer replaces a 27cc gas trimmer, with 40V HP technology providing power and durability for over 45 minutes of runtime using a 40V 4Ah battery. The trimmer features attachment capability for added versatility, a 14"-16" adjustable swath, and a carbon fiber shaft for lighter use. Its variable-speed trigger and 2-speed switch offer customizable power. The REEL EASY+ bump-feed head makes reloading quick and simple. Like all RYOBI 40V tools, it's part of the 40V System and is backed by a 5-year tool warranty and 3-year battery warranty.