Listen to your own music without any worries with the JBL Reflect Contour 2. The ears have a battery life of 10 hours, which means that they have multiple training sessions. These earplugs remain firmly in your ears thanks to the silicone ends and 3 different sizes of ears. With only a wire in your neck you do not suffer from cables that get in the way during exercise. You will find the controls in the neck wire. This adjusts the volume, you change music and record your conversations. If you have Siri or Google Assistant, it is also possible to control your music by voice using the built-in microphone.