? Portable Cellphone Jammer Blocker Module, Output frequency:

? CDMA: 850 to 894MHz

? GSM: 925 to 960MHz

? DCS: 1805 to 1880MHz

? PHS or CDMA1900: 1900 to 1930MHz or 1930 to 1980MHz

? 3G: 2110 to 2170MHz

? Shielding radius: 3 to 15m

? Dimensions: 4.5 x 10 x 1.8cm

? Weight: 150g

? Lithium battery: use time is 2 to 3 hours (use the Nokia charger)