iKross Wireless Bluetooth Headset Behind-The-Ear Handsfree with Microphone - Black/Orange Ergonomically behind-the-ear style offers all-day comfort. Echo cancellation for enhanced voice clarity. On ear controls let you manage calls and volume all from the headset. press both V+ & V- simultaneously to Mute or Unmute Up to 5 hours of talk time and 180 hours of standby time. Monitor headset battery level on your iPhone and iOS devices.