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Jot 4.5 eWriter Outside Dimension 4" W × 5" H 10 cm × 13 cm Writing Area 2½" W × 3½" H 6.3 cm × 8.9 cm
Jot 8.5 eWriter Outside Dimensions 5" W × 8" H 13 cm × 20 cm Writing Area 5" W × 7"H 13 cm × 18 cm
Sync 9.7 eWriter Outside Dimensions 7" W × 9" H 18 cm × 23 cm Writing Area/td>
5½" W × 8" 14 cm × 20 cm