... (ideal conditions) - Onboard Buttons/Indicators - Unlock Door, View Monitor. Talk Button, MIC, LED Indicator, Mini USB Input, Speaker, ... Volume -/+, Brightness control -/+, Antenna, Power ON/OFF Switch , Work Light, Charge Light- Dimensions: L:102 x W ... Microphone, Call button , Speaker, USB interface for charge , Power switch , ‘Pairing’ button, Indicating light for low voltage , Indicating ...