The talk back function allows you to transmit on the channel detected after scanning resumes after a preset time, prior to the Tx channel setting. The nuisance delete function temporarily deletes a busy channel from the scanning list. Backlight at stop scan automatically turns on the LCD backlight when the scan stops. HS-94 HS-95 HS-97 VS-1SC HS-94 : Earhook headset with flexible boom microphone. HS-95 : Behind-the-head headset with flexible boom microphone. HS-97 : Throat microphone fits around your neck and picks up speech vibration. VS-1SC : VOX/PTT CASE. Required when using these headsets with the transceiver. These headsets and VS-1SC are water-resistant, equivalent to IPX4. SPEAKER-MICROPHONES Compact body 56(W)×97(H)×36. 4(D) mm compact body with durable, dependable construction, has been tested to MIL standard specifications. HM-138 HM-168 HM-169 HM-170GP HM-138 : Full sized speaker-microphone. Equivalent to IPX7. HM-168 : Compact type speaker-microphone. Equivalent to IPX7. HM-169 : Rugged type speaker-microphone. Equivalent to IP57. HM-170GP: GPS speaker-microphone for BIIS mode. Equivalent to IP57. BELT CLIPS & LEATHER BELT HANGERS ANTENNAS Li-Ion battery pack The large capacity 1700mAh Lithium-Ion (Li-Ion) battery pack, BP-227 provides a practical 9­10 hours* of operating time. * Typical operation Tx:Rx: Stand-by=5:5:90 Other features · 128 memory channels with 8 zones · Inversion type*1 voice scrambler built-in · Optional VOX headsets available · Optional GPS speaker-microphone · Power ON password · 8 DTMF autodial · Normal and priority scans · 2-step power saver and 2-step low battery beep · MDC 1200 mode programmable · BTL only version (no vibration alert and no voice recorder) and BTL/Vibration alert version (no voice recorder) available*2 and more. *1 Inversion type voice scrambler is not compatible with UT-109/UT-110 voice scrambler. UT-109/UT-110 cannot be physically installed into the IC-U200...