Screen: 3.5" TFT LCD, DPI 320 x 240Shell Material: ABSSurface Treatment: Elastic PaintPower Source: 18650 Li-ion Battery DC 3.7 V (Built-in)Power Consumption: ≤0.8W (Without 12V output)Charger: input AC 100-220/Output 5V/1AVideo Input Pattern: PAL/NTSCVideo Input: 1.0Vp-p12V Temporary Power Output: DC 12V/500 MAAudio Output: 1W (Max)Auto Sleep: No signal in 3 minutesWorking Temperature: -15℃~+50℃Dimensions: 92 x 72 x 28 mmNet Weight: 120gGross Weight: 500g Item Includes: 1 x Main Machine1 x Charge1 x Charge Cable1 x Wristband1 x USB-RCA Cable1 x BNC AdapterCCTV（Closed Circuit TV）Tester which can display the camera image ,amplify the audio ，provide DC 12V temporary power camera, with wristband and surface painting is suitable in the field of CCTV monitor system. The CCTV tester in which the built-in 18650 Li-ion battery can supply strong and reliable power whose working time is more than 8 hours after completely charged is artistic, humanized and easy to operate. In a word, it is a necessary tool for field engineer to install, debug, maintain and check network.