A battery comprises a plurality of connected, thin cells mounted in a band of a watch. The dye set of the present invention is suitable for color inkjet printing and includes Direct Blue 199 dye, Acid Blue 9 dye, and Direct Blue 87 dye; Reactive Red 158 dye, Reactive Red 159 dye, and Acid Red 92 dye; and Acid Yellow 23 dye and Direct Yellow 86 dye. The fleece is made of a thermoplastic elastomer in a melt-blown process. The digital items are then evaluated in order of respective rank to determine a subset of digital items that re recommended to the user. In order to be able to stamp flat perforated sheets, it is suggested that the sheet be countersunk through embossing in the hole boundary area on the side diametrically opposite the matrix after the hole punching to equalize internal tensions. In some embodiments, the interstitial volume is filled with air; in other embodiments, the interstitial volume is filled with a thermally insulative material.