12 months for the warranty of the product and 6 months for the warrantty of the battery. Really good warranty pllicy. Will come and buy again! Date Added: 08/29/2015 by Bart Henson

Can block the 2G,3G,4G mobile phones and owns powerful jamming ability to cut off all the mobile phone signal frequency bands. Really like this cell phone jammer. Date Added: 04/05/2015 by Theron Torno

"While it's a bit bulky, not really something you can carry in your pocket putting in anywhere exposed does the job extremely well. I'm on a floor which is much larger than 20Meters and is all open floor plan, I turned it on and sure enough within a few seconds people were looking at there phones with that dumb look on their face trying to redial over and over until they realized they had no signal lol. I would recommend this jammer for sure. The only issue I noticed is that with T-Mobile the service didn't go out to 0 bars, went down to 1 but wouldnt place or receive calls, 4g went offline asap. " Date Added: 03/06/2015 by Theron Mcclune