These cufflinks are a unique gift for anyone with a technical, computer or electronic background. They measure 19mm x 19mm x 20mm (deep) and are mounted onto angled square rhodium-plated swivel cufflink findings. These PCB cufflinks come with either a 3W amplifier chip (as shown in the image) or weighing scales chip. All our cufflinks are designed and handcrafted by our steampunk artist and won't fail to attract attention and create an instant talking point. Our cufflinks are boxed and ready to give as a gift to someone special.