I've had the Ginha 1602 from E bay (seller VIPstore888) for 10 days now.  Using it for ED, BPH, strained knee menicus ,neck stiffness, lower back soreness.  I have put about 70,000 shocks thru the machine and just had a failure of the 15mm convex head ( the one I use the most). Actuating shaft snapped at applicator head in white nylon case  It is still usable but you have to keep constant pressure on it or it makes a banging noise & will jam. VIPstore888 claims 60 day replacement or return and I requested a replacement head, we will see how good this Chinese seller who claims to have a warehouse in Calif holds to his guarantee. Here is how I use the machine:

1. Tried ky lubricating gel & it was messy and it required to cover the head with a condom or the provided plastic head.  I switched to baby oil & it is much less mess, smells good & I only use the provided blue head cover when doing certain sensitive areas.   Most of the time I leave the head uncovered & just clean it with alcohol when done with therapy. 
2. For most treatments I use the highest setting P=12 105MJ. After a little adjustment period,I was able to tolerate 105MJ in all areas treated (a little over 2 bar equivalent) 
3. I always use the manual setting (picture of full body spread eagle) so I can select power & frequency. To make it easy, each treatment length is the 2500 pre set shocks for the manual setting. The machine automatically shuts down after the 2500 shocks & the fan continues to run. If you scan thru all the other treatment areas it registered 2500 shocks & the machine will not restart. I let the machine on until the fan shuts off, then reboot the machine by turning it off for 10 seconds and restarting.  This leaves about 6 minutes between treatments. Max head temperature experienced = 32C, usually never exceeds 28C
4.  My machine skips a beat a few times in each 2500 shock treatment, happens more at low frequencies
5. Here are my treatment latest protocols & results after 4 treatments in each area - 

ED (vac pumped to plump before treatment) - penis top & both sides@120 degrees   15mm convex bare head,  power = 105mj  F= 3hz  2500 total shocks - no noticeable results yet & don't expect any for another 4 weeks

ED & BPH prostate combined -Cura area angled toward prostate,   15mm concave head blue plastic head cover,   power = 105mj  F= 10Hz  2500 shocks - urination frequency slightly decreased but flow still low, still taking both BPH meds

strained knee menicus - 15mm convex with blue plastic head power = 105mj F=10 hz 2500 shocks - noticeable improvement in stability

lower back soreness - 15mm convex head blue plastic head cover, head power = 105mj F=10 hz 2500 shocks - only slight  short term pain relief

Stiff neck , 2 treatment areas - trapezius muscles on shoulder , 15mm convex bare head, power = 105mj, f = 10 HZ, 2500 shocks - 
trapezius & splenius muscles on neck - 15mm convex head with blue plastic cover,  power = 105mj, f = 10 HZ, 2500 shocks - noticeable increased neck rotation &  less stiffness since starting treatments