Bohr, which started as a railroad timepiece, is known as the "lamp factory of mechanical watches". Bol's early advertisements were aimed at the railroad industry, and later extended to rail travelers, but in modern times Bol established the brand spirit of "accuracy in harsh environments", emphasizing the practical functions of the watch such as durability, strong luminescence, anti-magnetic and shock, and was highly regarded by explorers and CERS. Ball currently uses a miniature tritium tube, which is 100 times brighter than fluorescent paint, because the gas lamp it uses contains radioactive materials and cannot be sold in some countries with strict regulations.
 
Bol's Engineers and Warriors are highly recommended, the Engineer III series launched in 2016 is equipped with SpringLOCK® anti-seismic protection system and Amortiser® anti-vibration device, which is not affected by the operation of 80,000A/m magnetic field, of which the Bronze Star is equipped with 14 self-luminous gas lamps, limited to 3000 pieces, priced at 18,500 yuan, and the Silver Star uses super luminous paint, priced at 13,200 yuan. The cost performance of the war warriors is very high, the public price can be reduced to more than 7,000 yuan, and there is still room for the price to drop through overseas shopping, and the most expensive style is less than 30,000 yuan.