I find the fit and isolation comfortable and easy to adjust. Clean regularly to remove debris and deposits. Gets the job done, I guess. For IEMs I started with SE-530s and have a couple of pairs of SE-215s. I own two pairs, and think so highly of Shure earbuds that I also own a pair of 425s which I connect to the RMCE-BT1 battery powered Bluetooth adapter. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Note: Do not pull on cable to remove earphone. Warning: Do not push the earphone sleeve beyond the ear canal opening. The bigger issue I have (which is not a big issue per se) is cable managing the headphones. Visit http://www.shure.com/earphones for the latest regulatory and compliance information. decrease RCV output level. The fit of the earphone can greatly affect sound quality. Este equipo ha sido diseado para operar con las antenas que enseguida se enlistan y para una ganancia mxima de antena de [+2.13] dBi. Reviewed in the United States on January 16, 2023, They sound fantastic, but because of no ipx rating they should not be used in the rain or for exercise. Visit http://www.shure.com/earphones for more information. Note: Testing is based on the use of supplied and recommended cable types. This involved a lot of meetings and suddenly I was looking for a solution that would allow me to easily transition between meetings (talking) and music/audio. I used to have to disconnect and reconnect my old wireless headphones all the time when switching between devices. However, there is no guarantee that interference will not occur in a particular installation. Noise with low AF signal and normal RF signal. I also wanted an upgrade from my Klipsch S4i's without breaking the bank. This product meets the Essential Requirements of all relevant European directives and is eligible for CE marking. When earphones are charged, LED turns off. Shure Incorporated, 5800 West Touhy Avenue Risk of fire or burns. The sound quality is great, I don't think anyone who has the proper fit would disagree with that. Product battery may explode or release toxic materials. I still think the price is insane but it displays none of the other issues BT1 users were complaining about. I bought a pair of SE525s about 7 years ago my daughter broke them on a plane by accident. Almost Perfect for the Price! 2. Sound quality compared to same 535 units purchased in 2010 and 2014 far inferior. until the LED flashes blue and red. Shure has knocked it out of the park. HetiOTOpt,IB r.o()Jl9nH HayWHMKO& Shure, Cller.tanOOOptti