The plantronics m25 bluetoothreg headset features deepsleep mode to stay charged for up to five months so itrsquos ready when you want it you can listen to music internet radio or driving directions and never miss a call whispered alerts keep you informed about battery level bluetooth connection and moreplantronics deepsleeptrade powersaving mode activates when your m25 is away from your phone for over 90 minutes when itrsquos back in range 33 feet or less you can just tap t