This runs on a Lithium battery which is supposed to last several years, then you can replace the battery. My old trimmer broke so decided to pick one up in the store without checking reviews. Though there really aren't any on the Walmart site yet. It's a fair trimmer. I am wondering if I swapped the battery out, if I would notice a difference in cutting performance. But I will be taking this back and getting something else. Those goofy ones from the commercial cut better than this and are MUCH quieter. The courser hair around parts of my ears seems difficult for it and several times it got stuck trimming the edges around my beard, I never had that problem with past trimmers unless the batter was going dead. And the noise is MUCH louder than older trimmers I've had. Which isn't great when you are sticking it in your ear. :o) Again, I'd go with something else. For about the same price right now, you can purchase a beard trimmer with the ear/nose attachments for just a dollar more than this, and it has good reviews.
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