Gas Light
The BALL solution to the problem of reading time in the dark is the Self-Powered Micro Gas Lights (3H). This Swiss technology safely captures pure tritium gas in a mineral glass tube coated with luminescent material. The light is produced when the electrons of the tritium strike the luminous phosphors on the inside of the glass.
Our 3H micro gas lights glow up to 100 times brighter than luminous paints for up to 25 years.
They do not require charging from any outside light source or power source. The brightness of 3H micro gas lights will deteriorate over the years. The encapsulated tritium gas poses no risk to the wearer over the life of the watch.