✔15800mAh CAPACITY - WALKING POWER BANK: The T9900 is a phone with 15800mAh battery capacity.Without carrying heavy power bank,you can easily charge other phone or electronic devices.This is a very helpful function for people are in urgent situations or always in outdoor.

✔DUAL SIM CARD - TWO LIFESTYLE COMBINATION: The T9900 can insert two sim cards.You can use it to handle both your working issues and your private life,which is a convenient function for people to play different role with only one phone.

✔LOUDER SPEAKER - AUDITORY ENJOYMENT: The T9900 equips with a loud speaker that it is a useful tool for those who suffer from hearing impairment.Even without any wire or cable,you can clearly hear the radio and music when you are in outdoor or at indoor.

✔RUGGED SHELL - MILITARY USED DESIGN: The T9900 is a design of military-used standard which is against shock,extreme temperature,dust and vibration.This is the phone which suits for the outdoor lovers,extreme sports lovers,rugged professions people.

✔FOUR LANGUAGES - TRAVELERS OPTION: The T9900 has been installed 4 main languages,English,Russian,Arabic,French.This can be the best option for traveller because it is really convenient to switch.