Operating Voltage: DC 12V Voltage Range: DC 10V-14V Operating Current: 0.7 ± 0.2A Wiring (3 wires): Connect the red wire to the positive power terminal; connect the black wire (with lug) to ground; the green wire offers two connection options: connect directly to the positive power terminal (antenna extends/retracts with power on/off) or connect to a separate control wire (antenna extension/retraction is manually controlled). Extended Length: 750mm (length extending outside the vehicle) | Protection Plate: 305mm | Cable Length: 1400mm | Voltage: 12V DC Stainless steel antenna mast (5 sections); excellent AM/FM reception; operating current less than 0.5A; Noise level below 50dB; service life over 50,000 cycles; pushing force greater than 4kg; Good waterproof performance; easy installation; Multiple mounting head options available; Built-in imported micro-relay; 3C-2V coaxial cable (length customizable). Economical fully automatic car antenna 5-section stainless steel antenna mast Mast length: 39 inches Excellent FM reception Low noise, good water resistance Easy installation External high-quality micro-relay, long service life 3C-2V coaxial cable, 75 ohm impedance Installation angle: 0-30 degrees Note: 1. Manual measurement; please allow slight variations. 2. Due to lighting and screen differences, the item's color may differ slightly from the pictures.