Frascio Professional Hair Clippers Zero Gapped Cordless Hair Trimmer Professional Haircut & Grooming Kit for Men USB Rechargeable (Gold)

Is it noisy when using the hair trimmer for men ?

Can I do a haircut with this device or only Trimme?

Is this good for facial hair? like my beard i’m growing out, can i use this to clean and line up around my beard.?

Are these truly zero gapped trimmers? I've watched a few YouTube videos on these and seems you have to take them apart to get the true zero gap.