... the volume) Dimensions 82mmX52mmX21mm Environmental Temperature -20-60 Battery Charger AG600-C Charging Time of batteries fully charged About 8 hours ... HM02 2 -Receiver AGR600 22 -Earphone PH01 22 -Battery Charger AG600-C 1 Selectable Accessories: Suitcase SC02 Headset Microphone Earphone 1 ... Earphone 2 PH02 Waistband WB01 HM02 Wireless Tour Guide System AG600 /Tour Guide/Tour Guide System