Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Performs well for a cordless.

I picked up this detector for around $100 a few months ago, and it has performed well for a cordless model. Sensitivity is good. False alarms are on par with other detectors I've owned. The "solar" feature seems to be a gimmick. I don't think it really adds anything to the battery life. Battery life is pretty good though, and it uses standard rechargable AA's. It's a little on the bulky and heavy side too. It's a good detector, with good coverage, but I would shop around. You can find it for less than $125.