Channel:four channel(CH1:2414MHZ,CH2:2432MHZ,CH3:2450MHZ,CH4:2468MHZ) A/V mod method:FM Antenna:Build in omni-directional antenna Image sensor:1/3COMS Effective pixels:NTSC(510(H)*492(V)/PAL(628(H)*582(V) Lens:F6.0MM,F1.8 Night vision distance:3-5m Power:DC5V or 3.6V Li batter Operating temperature:0'C-40'C/32'F-104'F Blue color is option