Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Clunky, heavy, reasonably powerful.

I'm in agreement with the others who are unhappy with this unit. It's heavy, the strap is inadequate, and the amount of hand power required to depress the trigger and safety is ridiculous. After 15 minutes of use, I can barely manage 30 seconds of on time (male, 36 years old, no degenerative skeletal or muscular problems.) The line does break frequently. It won't take down weeds with stems bigger than pencils. Since I own it already and my yard is small I'll probably disable the trigger safety and rewind the core with heavier line, warrantee be damned. Would not buy again, would not recommend.