Few light battery mowers reach 4 inches. The WG745 does, at about 40 pounds, for about $280. The Greenworks 40V stops at 3.75 and the LawnMaster at 3.4.
Edges
WORX says the slim deck cuts closer to fences and beds, which reduces trimming. The listing states it as a design feature, without a distance to the edge.
Unanswered numbers
WORX gives an area but no minutes, and the deck is 17 inches in the title and 16 in the table. Claims of 40% more cutting power are relative to its own older motors.
Clearing a clog
Remove the battery or safety key and wait for the blade to stop before you turn the mower over or clear a clog.
Prices quoted in this text are dated readings and can differ from the live price in the buy box.
The two closest products on price
Same section, nearest cost — what else that money buys.