Beurer Stress ReleaZerFind your inner peace fasterShow stress the door. The Beurer Stress ReleaZer is relaxation aid and breathing trainer in one device.Relaxation aid and breathing trainer to relieve stressVibrating motor with low-frequency vibrations for stress reduction3 possible breathing cycles (10? 12 or 14 seconds)Choice of 3 different musical compositions via an app (forest/jungle/ocean) Optional illuminated ring to illustrate inhaling and exhalingOptional heat functionPositioning over the diaphragm areaBattery-poweredCharging time 4 hoursRunning time of 11 hours without heat function or 3 hours with heat function"Beurer CalmDown” app is available for free downloadCompatible with iOS 9.0 and Android™ 5.0 or above? and with Bluetooth® 4.0 or aboveComplete range of uses only available with the free "Beurer CalmDown” app