Review (3/5): Guide combs are too flimsy
The trimmer itself is OK, though my hair tends to clog the cutting head when the guide comb is attached, forcing me to detach, shake and re-attach the guide comb. The charge holds for about 30 minutes before it starts to slow down.
My biggest criticism is the flimsy plastic "fingers" of the guide combs: they flex too much and both times that I've used it (the second time being extra careful not to push down too hard on it) it cut my hair too short in one spot that caused me to have to cut the rest of my hair shorter than planned using the stubble attachment. The stubble attachment is meant for beards, not heads. This happened with the smaller guide comb, the longer one is even flimsier.
I won't be returning it as I don't have any of the packaging, but I will be looking for another one.