Features: Unique chemistry formula dopamine necklace: This necklace showcases the chemistry formula of dopamine, highlighting the romance sentiment and special meaning for science enthusiasts and couples. Quality materials: Made with quality materials, this necklace is durable and resistant to fading, ensuring a long lasting and vibrant appearance. Great for science enthusiasts:Especially suitable for students or professionals in the field of chemistry, this necklace allows them to showcase their expertise and individuality. Versatile daily wear: Perfect as a daily accessory, this necklace adds touches of personality and fashion, allowing you to display your unique taste. Nice gift for special occasions: Whether it is for a science lover, chemistry enthusiast, or a significant other on a special anniversary, this necklace expresses love, care, and blessings. Specifications: Material: stainless steel chain + alloy pendant Color: silver Chain Length: Approx. 40cm/15.75inch Package Includes: 1x Pendant Necklace note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.