... outputAudio inputAdjustable brightness, contrast, color of LCDVideo Level testing, video signals measured in IRE or mVAutomatically identify ... generationOutput 1 channel color bar video signal for testing monitorUTP CABLE TESTUTP cable testTest UTP cable connection ... Polymer Batteries, 3.7V DC3000mAhRechargeable4.5 hours recharging time, work for 12 hoursLow ConsumptionSleeping mode, display battery ...