The tech pen with UV light is a pocket-sized gadget pen that makes an excellent gift. This elegant, sophisticated pen has a centimetre and inch ruler, two screwdriver heads, silicone stylus, UV ball point pen, a torch to see the UV ink, and textured grip. Material: Metal and plastic. Size: Approx. 1.8cm x 1.8cm x 15.5cm. Requires 3 button cell batteries, included.