"Without pictures, it's just a story"
2.5mm plug. Similar to the Bite Switch except this is controlled by your tongue. The Tongue Switch works with even the tightest full-face helmets and chin cups, and requires no jaw movement or blowing. It is operated by a movement similar to pressing your tongue against the front teeth. It measures 23" long, switch body is 1/2" wide. Shipping Weight: 4 oz. (110g).