Bivan Hair Straightening Brush, Beard Straightener Brush [New Upgraded] USB Rechargeable Cordless, Portable Ionic Hair Straightener Brush Travel for Men/Women, Multi-functional Styling Comb

They don’t last the 30-40 minutes on one charge. I’d say 10-15 best, maybe three days of usage. They’re difficult to clean. The charging socket doesn’t feel very substantial. They developed a fault after a month and wouldn’t shut off; I had to leave them burning hot in a safe place until they ran out of charge. I tried to then charge them. They charged but then wouldn’t get hot again. So yeah, a bit rubbish really and no worthy of an “amazon choice” product IMO.

Very good portable beard straightener. Good quality but battery life was really bad. Used only 3 times ( 5 min intervals ) on full charge which takes 3 hours, and my beard is short. Bought a corded straightener and it is so much better.

sadly, this one arrived faulty, i have had 2 others from different sellers and both of them arrived faulty to.The brush is just not worth buying, 3 delivered from 3 sellers and all returned for a refund.Just do not bother.

It's ok I suppose tidies my beard up in certain areas but doesn't touch the under the chin tufty bits UPDATE it's now falling to bits all the heat bits just fall off crap

The charge lasts about 10 minutes which is 20 minutes shy of what they advertise. Mine has an opening where the top and bottom and does not close. The battery displays a 50 percent charge when full. Very poor quality, I would not recommend.

It's ok, but the battery dies after using it twice.Shame

Battery life is not long and it does not do well with overcharging

I bought it because I have curly hair and was looking for something to straight them. It is works well. Must be aware that getting hot and use the brush carefully.