The ICOM HM-175GPS hand microphone is an exciting accessory for your IC-92AD. It is submersible to IPX7 equivalent standard and features an integrated GPS receiver. The cold start TTFF (time to first fix) is 40 seconds and a hot start is 4 seconds (typical). The required 5 VDC at 65 ma is supplied from the HT. The built in 8 ohm speaker is rated at 1 watt (5% distortion).