... Monitor. Talk Button, MIC, LED Indicator, Mini USB Input, Speaker, Volume -/+, Brightness control -/+, Antenna, Power ON/OFF Switch , Work Light, Charge Light- Dimensions: L ... Buttons/Indicators -Microphone, Call button , Speaker, USB interface for charge , Power switch , ‘Pairing’ button, Indicating light for low voltage , Indicating light for recharge, Battery lidProduct ...