- Visual and audible alerts indicate battery level- Spare battery charges when not in use*, easily swap battery while call is in progress, unlimited talk time- Up to 12 hours of talk time on a single charge- Noise canceling dual microphone - Super light weight, only 21g- Three wearing styles (over-the-head, over-the-ear, behind-the-neck)- Bluetooth wireless range up to 300 ft /100 m- Bluetooth 5.0 with BLE- SoundGuard Digital daily noise protection- High -quality wideband audio- Remote answering with lifter (HL10) or electronic hook switch module (EHS), sold separately