Tools-free and easy installation with minimum effort. SHIELDS AGAINST INTERFERENCE - Build in 4G LTE Filter shields against interference and blocks unwanted 3G and 4G wireless signals for stable performance. Enjoy smooth and crystal clear 4K HDTV experience. DELIVERS THE CORRECT RANGE - ANTOP Exclusive Smart pass technology Amplifier allow easier adjust the balance between short and long range reception, and the intelligent switch can avoid signal overload. Any product you return must be in the same condition you received it and in the original packaging.We usually respond within 24 hours on weekdays. Thank you for shopping at our store. This item is in the category "Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Accessories\TV & Video Accessories\Antennas". The seller is "efrnova0" and is located in this country: US. This item can be shipped to United States.