The Fireman Night Breaker features the BALL revolutionary micro gas tubes for extreme readability. At 1. 5mm high, they are tallest ever in a BALL timepiece. Striking in appearance and superior in luminosity, the gas tubes are the perfect way to mark a momentous occasion or illuminate the path forward. Containing tritium gas, the micro gas tubes are self-powered and last for at least 10 years. They do not require recharging from the sun and do not drain battery power. The technology is unlike any other luminescent material found in watchmaking. Like all BALL timepieces, the Fireman Night Breaker houses an automatic movement. Specifically, the RR1103 caliber. Its precision is safeguarded by the BALLs patented Amortiser® system that greatly reduces shock impacts, while the timepiece is waterproof to 100 meters.