正面)手電筒在暗暗的地方
https://1.bp.blogspot.com/-WKBdJHpuMWw/X5aMUWn0IRI/AAAAAAAACL0/vyBLkiPD0HYsHFyb1e0DArx1wRCNM-tCQCLcBGAsYHQ/s800/_MG_9558.jpg
背面)開燈就會照亮手寫的字
https://1.bp.blogspot.com/-m_gVzvkJUhw/X5aMUhq_z2I/AAAAAAAACL4/VZ2aewrUhU0ruSHte9s5pLZdl159VdYkgCLcBGAsYHQ/s800/_MG_9565.jpg
字可以寫在光中
----------------------------
雙面印刷
用紙：頂級象牙卡
尺寸：14.7 x 10.8 cm
----------------------------