RENPHO Massage Gun, Deep Tissue Back Massage with 8-12mm Adjustable Amplitude Heavy-Duty, Valentine's Day Gifts, Percussion Professional Muscle Massager Gun for Athtetes & Home Use

I bought this as a gift for my son and he absolutely loves it. It gets right in like a deep tissue massage and relieves pain and tight muscles.

Wow! I am impressed! The massager technology has gotten really good! I did not expect this quality in a $70 massager. When massaging, the massager imparts very little vibration to the hand holding the massager while, at the same time, it is a powerful massager on the business end. Control: Amplitude - there are 5 settings for the amplitude where the amplitude control how far out the massaging hammer (yes, this is essentially a hammer) thrusts out during each cycle. The range of distance the hammer thrusts out each cycle is enough to cover most needs. In fact, for me, I only use the highest setting and control the depth of the massage through how hard I press the massager into the surface of the area being massaged. Be careful that you don't press too hard. You can hurt someone if you press too hard. It is that powerful. Frequency - There are also 5 setting of speed of vibration. It is advertised that the frequency range is 1,800 to 3,000 cycles per minute. This range of frequencies gives you a lot of control over the vibration effects that one might want. However, I spent all of the time on the low end of the frequency. In fact, if there was two more slower frequency settings on the lower end, I would welcome that. Having said that 1,800 hz does a pretty good job of transmitting pulses deep into muscles. I am just nit picking here. Noise level was pleasantly quiet. I was very surprised at how quiet and powerful the massager was. This contributed to the sense that the build quality is very very good. This is a solid piece of engineering. The web site claims that a single charge can last for 4-5 hours of continuous operation. I doubt that the charge would last that long. Granted that I used highest setting of amplitude and lowest setting of frequency, however, mine did not last nearly that long. The charge went from 80% (out of the box) to something like 40% in 25 minutes of running it hard. I haven't tried it after a full charge to see how long a full charge would last. In most situations, I expect sessions to last about 15 to 20 minutes. Any longer than that, I think muscles would turn into ground beef. It is that powerful. Also, I don't know how appropriate this is for back massages around the spine. This can be really powerful and one needs to be a little careful with it. This definitely is not a toy. I think this would be most effective against large muscle groups rather than areas where there are lots of boney structures. The vibrations are vigorous enough to be transmitted to significant depth in the muscle groups like thighs, hamstrings, gluts, deltoids, and etc. where there are large muscle masses. I haven't had it long enough to know how long this will last. However, based on how solid it feels, I would expect this to be a very reliable tool that will last a long time. I will try to update this review in about a year.

I had this gun for 2 weeks. I have chronic lower back pain, also have hip pain because of tight muscle. I bought many massage guns in the past. This one really releases my muscle. I have use it for 2 weeks, still have 20% battery. I only use it for 5-7 minutes a day. I use L5 and 10-11mm amplitude to do my massage. I highly recommend this gun.

What I had hoped for powerful and battery last long

It is powerful and as described