2. AUDIO SETUPPress left or right button to enter audio setup page:Sound mode-press up or down button to select it and then press left or right button to set the sound modeas Personal, Standard, Music or Movie.Bass/Treble/Balance-press up or down button to select Bass/Treble/Balance and then press left or right button toadjust.-The Bass/Treble/Balance can be adjusted from 0-100.Audio LanguageAudio Channel-To switch the Audio channel: L+L/ L+R/ R+R3. TIME SETIUPPress left or right button to enter time setup page:INSTALL BATTERYINSTALL THE BATTERY AS FOLLOWS:1. Unscrew the screw to remove battery cover.2.Put the lithium battery in the flute.3.Close the cover, then tighten the screw.Note:-Before install the battery, please push the POWER ON/OFF switch to OFF.-Twist off or tighten the screw only on the sense showed by the direction on the unit.-When closing the cover, you should aim at the slot accuracy.Rechargeable Battery Use1.Charge the battery-Slow charge: The battery will charge in the play mode at a slow pace takes up to 12 hrs to chargecompletely.-Rapid charge: Connect the AC adapter to unit and trun the power switch off, the battery will charge atrapid pace in 3 hrs.- The indicator is red during charging; it gets green when charging completed.2.Using and Maintaining Rechargeable Battery-.The normal working condition temperature is: 0 ~45 ;-.Always unplug AC/DC power supply for the unit whenever not playing.NOTE:A new battery pack which has not been used or one which has not been used formore than a month, may appear to not recharged enough , this is due to the characteristicof this battery and is not a malfunction. In this case, recharge it two or three times beforethe first use,and it needs more than 8 hours to recharge battery.Noises may be generated during recharging. In this case, use a more distant power socket.Do not recharge or discharge battery near a heating element such as a heater or directsunlight.916