db 4 Overall these are very good clippers for the price.BUT... they take 16 hours to fully charge... I'm not lying.. I timed it 3x with an average of just under 16 hours from 0%-->100%.That being said, they work well for trimming my beard and cutting hair.I trimmed my beard, cut my hair and then my sons' and the charge went from 100%--->60%.. not bad really.I then left it for a few days and after about a week trimmed the beard again and the charge was then at 50%. Continued trimming my hair and beard for another week and then charge was down to 10% and did a recharge.. over night and all the next day (16 hours) and it was at 100% again.These have a good grip so they won't slip in your hand but be careful with the "water resistant" part.There is an open plug on the bottom where the charging cable fits in and you do NOT want water in that. So while a little water splash on the clippers wont ruin anything (especially if you give it a few days to dry) I would be careful around water due to the plug not having any kind of cap/cover.I would like a few extra clipper attachments as I miss having the attachment that went from 9mm on the left up to 12mm on the right on my old clippers ( so I could blend my hair better ) but for the price these are nice.I wouldn't use them in any kind of "professional" setting as they start to get really hot after cutting 2 different peoples hair in a row and the blade is rather narrow (but the narrow blade is good for beard trimming so there is that).