I would like to introduce you to a new addition to our Christmas Gift Guide 24: Red Tec who sent me RED STAR TEC Sweatproof Wireless Earbuds Headphones for Running and Red Star Tec Scientific Calculator SC-216 – Junior & High School Calculator for Students Scientific Non Graphing Calculator Suitable fo SAT & General Business Use… in exchange for a spot in our Christmas Gift Guide. RED STAR TEC Sweatproof Wireless Earbuds Headphones for Running is the perfect Gift for David to use at work. Although I can see Charlie and his friends snagging them when David isn’t looking. As for Red Star Tec Scientific Calculator SC-216 I will be…