Huge impact - like having a four foot antenna on your cell phone. - Improves reception, reduces static in elevators, tunnels, highways etc. - Works on any analog or digital phone, including PCS, GSM, TDMA, CDMA and tri-band phones such as Nokia, Motorola, Ericsson, OKI, NEC, Sprint, Lucky Goldstar, Nextel, Samsung, Sony, Philips, Qualcomm, Mitsubishi, Sanyo, Audiovox.

Universal - works on any cell phone.

Easy to install - simply peel and stick to the inside of your battery compartment.

Perfect gift for your loved ones!

Incredible price! Actual retail value $19.99(each) (On TV and in stores)