Use with any standard audio device. Triangle-shaped plastic case with cable storage. 3.5mm audio jack and 46-inch earbud cable. Complies with Prop 65. 0.75" H x 2.5" W. Imprint Area is 1.31" H x 1.31" L on 1 color only . Please call for rush delivery availability or for multi-colour, multi-location imprints.