Feature: 1. Effectively prevent GPS and Beidou satellite positioning and tracking, shielding range is 5-20m. 2. Effectively interfere with GPS and Beidou satellite signals, protect your whereabouts privacy and information confidentiality. 3. Interfere with all current GPS global positioning systems and Beidou positioning systems. 4. Does not affect the normal use of mobile phones or other electronic devices. 5. Suitable for 12V or 24V car, but it cannot exceed 24V. 6. Compact size, high power, light weight, large coverage and easy to carry. Specification: Condition: 100% Brand New Item Type: GPS Signal Blocker Material: ABS Color: Black Applicable Vehicles: Vehicles with GPS or Beidou positioning Working Frequency: 1555-1580MHz, 1200-1300MHz Coverage: Up to 10 meters/32.8ft (depending on the mobile service provider's networks conditions and background signal strength) Transmitting Power: 10dBm Working Temperature: -30℃ - +60℃ Package List: 1 x GPS Signal Blocker