stands for integrated S-Power. It is developed for smart phones such as iPhone, Blackberry, Windows phone, and any Andriod phones. It integrates Slive S-Power technology with Slive smart phone charging technology. 

What does this mean?

Assuming an average person could crank at a speed of 120 rpm for 5 minutes, iS-Power could generate up to 10-min of smart phone talk time.