I ordered the Panasonic ER-SB40 to replace an old Philips beard trimmer that I had been using for years (it's battery was no longer holding charge for more than 2-3 days use). The Panasonic ER-SB40 is excellent and does the job perfectly. My beard is very short, so providing a close (1mm) cut was important to me. That said, it will handle beards up to 10mm, so it's very flexible. I realised that it wasn't a hair trimmer, but I didn't want a hair trimmer. This complements a recently-purchased Panasonic ES-LV67 shaver, both of which use the Panasonic linear motor which works very well. As always, Shavers ordering and delivery service was excellent and the trimmer was in stock. Well done.
Used it for a hair cut (I don't have a beard), despite the packaging only mentioning it being for trimming beards although the website said it was for hair as well. Thought I would try it out - and it worked really well for a short (number 1) cut! It charged up quickly, I liked being able to set the cutting length to what I wanted and easy to use. Had to clear the guard out a few times due to my lockdown hair being too long, but not a problem. I got a great haircut and thought it was an excellent product.
After six weeks of the Covid-19 lockdown I decided to take the plunge and invest in a head shaver for the first time. The Panasonic ER GB86 K51I is well made and instructions supplied clear. It handles well for shaving all sides of the head and the lithium battery time is good. Overall I am pleased with the results and would recommend this product.