Place finger on Black Stress Chip. Stress shows up as color change.They can be used over and over and over again. Great for Marketing and Education.
You can use the cards learn more about your love life, and find out if you're truly happy in your relationship.
• Standard Size 86*54mm
• Full color
• Single or double side printed for option
• Minimum Order – 500pcs Card
• Print your logo or special art on the card or custom as you request .