Harley Benton Finger Trainer

Not very pleased with the product. Its dimensions do not correspond with the dimensions of a guitar neck so the mechanics are not the same.
The adjustable ring for the pressure force for every finger does not vary the actual force very much. So.....

I got this but it's not so useful to be honest u can practice better on the guitar neck itself and it also produces annoying noise while practicing with it

Well, i accidentally bought 2 trainers.
It feels more like a cheap toy. and well... I broke one down. Not a bad deal regarding the price, but be aware of the fact that you need to be gentle with it.

When I bought this device I thought it would increase my overall dexterity but it fails to do that.
It just helps you increase your hand strength and causes tightness and reduces limberness in the tendons and ligaments in the hand.
I would recommend steering clearing of this product, its only building muscle mass on the fingers, its not even useful as a warm up tool. I tried using it for doing chromatic style exercises but it doesn't really benefit the player.

Was not impressed with this product. The plastic buttons at the top of the finger piston things came off easily and were easily lost. The springs in the frame of this product also began to degrade and seize up fairly soon after buying it also. They were not in a wet environment so I do not understand if they rusted or what.

Would not recommend this product. I would recommend just doing fret board exercises instead as that way you build both technique and strength.