Being a Jawbone lover for years, and always thinking nothing else was better, I bought my first Plantronics bluetooth headset, an M25, and was immediately blown away by the battery life. Using these headsets for so long, I wondered how anyone can hold a phone to their ear for more than 10 seconds, as doing so absolutely drives me crazy! I always bought used Jawbones on Ebay, then realizing how important having a new one was, I splurged $100 and purchased the new Jawbone "Era by Jawbone", not to be confused with their previous model, the "Era", and was disappointed with the battery life (low battery alert with 27 minutes of talk time in 3 hours). My used M25 went for 2 solid days, and I talk A LOT! So, my next "new" headset was certainly going to be a Plantronics, and this one is wonderful! I've never installed the ear loop, it stays in my ear, unnoticeable even leaning back, has physical volume and on/off switches, and the Plantronics app on my Note 5 works great. I've even had to use the "Find my Headset" once, after misplacing it, and the squealing was plenty loud enough to go right to it. It even allowed me to raise the volume of the squeal of the headset, from the phone, in case I didn't find the headset and needed a bit more help. It even has a map of where it was last used, so it can be found that way. I only wish it had the battery life of my former Plantronics, the M25, because it was so spectacular in that regard. But hey, don't we all have micro usb chargers accessible in every room these days? Anytime during the day, I can just plug it in for 10-15 minutes, and it's pretty much fully charged again. But being a heavy talker, and I can almost get through the entire day on one charge with this one. That's great, especially compared to the 3 hours from my last "new" Jawbone. (Yes, I may have had a defective Jawbone, so I shouldn't blast them too much) But the Plantronics are batting .1000, and I'm as happy as I can be with it.