Description:1. Car 12VDC fuse protection circuit.2. Interfere with all current GPS satellite positioning signals.3. Effectively guard against GPS satellite positioning & tracking.4. Small size, high power, light weight, large coverage, easy to carry.5. Work does not affect the normal use of mobile phones or other electronic devices.6. Effectively interfere with GPS satellite signals to protect your whereabouts information confidentiality. Feature: Brand Quelima Working Frequency 1500-1600MHZ (GPS Satellite Navigation Dedicated Frequency Band) Transmission Frequency 2 W Available Device Types Satellite Navigation, Location Tracking, etc Maximum Radiant Power (1 meter away, dipole antenna test) Less Than -10d Bm Transmitting Frequency 1500-1600 M Hz Effective Coverage (Shield Radius)2--5m Charging Specification 12V-36 V Working Temperature-30 ~ 60 C Relative Humidity 5 to 95% Storage Temperature-50 To+60 C Weight About 50 g Size 75x 20x 20 mm Package Included:1 XShield