1、Power supplyPower Input: DC3.3V_5.5V, stable voltage Accessories: AC adapter, output 5vdc 1A , input 100VAC-240VACBattery box : Ni_H, 4xSIZE AAA or alkalinous AAA cells， no cell insidePower Consumption：Less than 0.65W; 2、Video and Voice: Signal input: AUTO NTSC/PAL video signal Sound Function: double-channel stereo Adjustment Function: variable volume, picture brightness Pixels: 640H*480V dots, 710,000pixels Angle of View: 32 degreesVirtual Display Size: 72 inches, 2m away 3、Input jacksAV input jack: Ø3.5 female, 4-pole.AV connector cable ：The 4-pole hole male Ø3.5, Ø3.5 male jack audio and video.RCA connector cable : the 4-pole hole female Ø3.5, RCA in yellow、white、red.Video signal: 1 Vpp/75ΩSound signal: 200mVrms/20KΩPower input jack: Ø4.0/1.7 female 4、Ambient Temperaturesoperation: -10ºC-60ºCstorage :-20ºC-80ºC 5、Wight and DimensionsDisplay unit: Approx. 90g (not including cables)Dimension: Approx. 168(W) x 37(H) x 30 (D) mm (display unit)Signal cable length: 150mm * For the purpose of improvements, design and specifications are subject to change without notice