This is the Master Tools USB Powered Saw from Trumpeter Scale Models.

FEATURES: Ideal for a variety of crafts and hobby projects Cuts metal and plastic pipes with diameters less than 0.14" (3.5mm) Built-in 3.7V 700mAh LiPo battery that recharges with USB charge cable

INCLUDES: Saw with five Cutting Wheels USB Charge Cable  

BOX DIMENSIONS: 6.50" W. X 2.25" H. X 8.63" L. BOX WEIGHT: .51 LBS.