With a wall or two I got to around 20 feet, but if my phone was in my pockets I had very few stutters which is always the most important connection feature of a pair of fitness headphones. (soundguys.com)
For all accounts, apps performed without any drops and few stutters even when multitasking, which is helped along by the 4 GB of RAM. (androidauthority.com)
After a few stuttered attempts at losing weight down the gym I feel like I now have it cracked. (coachcalorie.com)