Hanged on the glasses, when the head is tilted forward, the Driver Alert will alert you wake up until the head is raised upright
Soft grip for comfort wearing
Storage case holder included
Customized logos are welcome
Product size: 1 2/3 x 7/8 x 1 1/4 inches
Colors: metallic blue, metallic silver and metallic black
Battery: LR44 x 1 piece button cell battery (included)
Certificate: CE