Nova is the one of the most popular company who makes trimmer and savers.
Nova NHC-3921 trimmer is a professional rechargeable trimmer which comes with:
AC & rechargeable hair clipper
Charging time you hours
Full power can be used for about 40 minutes
Equip with 2 comb attachment with different length
charging indicator
I am using this trimmer from past 3 months, and it is not working properly.
It will not give that much time trim which is shown in the box of this product.
If you are interested to buying a trimmer please don’t go for it, there aee so much other trimmers are available in the market.