WiFi Range Extender, 1200Mbps Wireless Signal Repeater Booster, Dual Band 2.4G and 5G Expander, 4 Antennas 360° Full Coverage, Extend WiFi Signal to Smart Home & Alexa Devices（W1200X01）

Was a huge improvement increased signal strength greatly. It died in 13 months though.No sure what the warranty is?

So this says it has 2.4 and 5g capabilities but it gave worse signal than just my regular router to the same exact area. I got a different one and it works much better. This product is pointless and basically doesn't work. When I tried it right next to my router (400mbps) it only did 10mbps which is ridiculously slow. Don't buy this range extender.