Verify the setting. This is the most common user error with the LU-6868. Buttons are Unresponsive
If you are a model maker, a hobbyist, or a professional jeweler, you have likely encountered the name . Renowned for German engineering and microscopic precision, Proxxon tools are the gold standard in the mini-tool industry. Among their most revered pieces of equipment is the Proxxon LU-6868 Wecker —also known as the Proxxon FET (or the Proxxon 28668 in some catalogs).