“Easy to use, but one must remember to delete the previous transmitter from blueooth on the iPhone before setting up the next one. As a suggestion, Lifeline may also want to consider making available on the website an adhesive remover wipe which eases the discomfort of removing the transmitter - I use the Smith & Nephew REMOVE, which contains aloe and this also reduces irritation of the skin on removal. I let it soak in for few minutes before removal, and then I clean the area thoroughly with alcohol afterwards, before installing the next transmitter. I've found it to be very helpful.”