SHIELD timepieces are employed by the pros. We have earned the respect of the military, police, firemen, and professional divers. The SHIELD "BUBBLEBACK" pays tribute to one of the world's greatest watch designs by the world's most recognized watch brand. The surgical steel case remains the same quality yet we added a helium release value so the watch can reach 500 meters or 1640 feet of water resistance. Compare that to the majority of divers watches, which reach 200 meters or 600 feet of water resistance, the SHIELD pushes the limits . Our hands offer Super Luminova for long lasting night vision. We continue to use a Swiss precision watch movement. Compare with more expensive timepieces and you will discover SHIELD sets a new standard.