I opened the package and had no problem installing a battery and using it. It will shock your holding hand a bit depending on your grip. I have tried it a few times and it does help. I tried increased settings on my hand and knee pain and it does help.
Even on the lowest setting this pen is a little intense. It works well and shows and proves where the nerve channels are once you start looking. i can see a use for this pen in relieving pain and calming nerves. If you do any other type of electro therapy you know what it feels like. It does locate specific nerve bundles. Start on low power first as the higher power settings can be a little uncomfortable for first time users. The booklet and instructions are well presented, although to fully understand the acupressure points you may want to do some more research so you get the full use from thee acupressure pen. Read the manual thoroughly before starting out.
This tool works just like acupuncture without a needle, just a hv pulse that stimulates the accupuncture points on the body the same way.
I'm 52 years old and i love how relaxed this makes me. i cant afford to have wounds on my body so needless to say this is perfect the maker.. GENIUS!!!
Received the order, everything works. 9 modes powerful beats current two nozzle battery fits Finger, instruction in English, the laser as shown in the picture, in general, everything is good I will use it!