... , French, German, Italian, Spanish 2.Led life:10000hours 3.Built-in 2GB Memory 4.CE,FCC,RoHS Specification: Display Technology: LCoS ... Operating Time:80 minutesBattery charging time: 2.5~3 hoursBuilt-in Speaker:8R/1W*1Power Supply : Li-Polymer BatteryPower consumption: 4 ... on the wall?A:Trimming focal length wheel to adjust focal length3.Q:Why in charging completed case, my equipment can't ...