It's protective armor designed specifically for your Bertucci® A-2 watch. The A-2 Ultra Package™ provides added protection for extreme conditions by combining the Pro-Guard™ protective watch case cover, and the Tridura™ Ultra Duty™ band... creating unmatched long lasting durability without extra bulk, light weight comfort and improved shock & abrasion protection. Installs in seconds, is salt water and chemical resistant, and is easy to clean. Fits Bertucci® A-2T, A-2S and A-2R case types / series. Made in the USA and have a 5 year warranty on the Pro-Guard™ and the Tridura™ Ultra-Duty™ band.