Cell Phone Signal Booster(Dual Band GSM 900MHz/1800MHz) Low or no mobile signal inside your room, forcing you to make calls while leaning out a window? Stuck in a 2 year contract but can't use your phone at home or work? Miss loads of calls because you have to leave your phone in one place to get signal? Well no longer with the worldwide use Cell Phone Signal Booster (Dual Band GSM 900MHz/1800MHz). Who is it useful for? This Cell Phone Signal Booster is usually used in an area of the country where cell phone signals are normally weak, or locations where signals may be hard to reach, like basements, car parks, and tunnels. Due to its coverage area of up to 800 square meters, this Cell Phone Signal Booster has also found tremendous popularity in large areas owned by private businesses, such as supermarkets, cinemas, hotels, airports, etc. At a Glance... Instantly boost your cell phone signals! Dual band GSM (900MHz/1800MHz) for worldwide use Up to 800 square meter working range Comes ready to go - no need for anything extra! Powerful solution at an affordable price Manufacturer Specifications Frequency range: Up link GSM 890-915/DCS1710-1785(MHz) Downlink GSM 935-960/DCS1805-1880(MHz) Coverage: 500-800m2 (Distance will reduced when obstacles are in the way i.e. surrounding walls) Gain(dB): GSM/DCS Up link 65/55 GSM/DCS Downlink 70/60 Gain adjustable range MGC≥30dB Guard band rejection GSM (BW-60dB)<=42 MHz (BW-70dB)<=45 MHz DCS (BW-60dB)<=104MHz (BW-70dB)<=107MHz Power supply: AC110～220V 45～55Hz Dimensions: Signal Booster: 160 x 121 x 22 mm (L x W x D) Product Notes Long range cell phone signal booster! Up to 800 square meters! This device is for GSM 900 and 1800 MHz signals only. Please check frequency your country uses before purchasing Package Contents Free Travel Adapter (for UK, AU, NA, SA customers) FAQ - Frequently Asked Questions Does this Cell Phone Booster work in _____? This Cell Phone Booster works in the 900 and 1800MHz frequency bands, which is most countries worldwide. If you are still not sure, please visit http://en.wikipedia.org/wiki/GSM_frequency_bands and see what frequency band your country is on. Does this Cell Phone Booster work with 3G phones? No, this Cell Phone Booster was designed to only work with 2G/2.5G/2.75G GSM phones on the frequency bands of 900 and 1800MHz.