... let you know what is going on! No battery require USB Webmail Notifier*Webmail Notifier connects to your private email account ... :gmail,yahll,outlook,outlook express,POP3,etc.!*Easy operation software!*Powered by USB with 4 feet cables!*Every new mail will be associated ... Windows Vista/XP/2000 etc.!SYSTEM REQUIREMENT*PC with available USB port*Windows Vista/2000 SP4/XP SP2/and else*50MB ...