50 business days - This brass twist action pen has a unique spiral shape that becomes illuminated when the light is activated. The stylus adds a new twist to one of our most popular light up pens. The stylus works on all touch screen devices, such as smart phones, tablets and IPhones. Features solid, fast and slow flashing modes. Turn the light on and off by pushing the small button on the side of the pen and twist the bottom of the pen to expose black ink.