HBF FACTORY V2 Version Hublot Big Bang Unwavering Courage Chronograph, referred to as HUB, features a case made from imported 316 stainless steel with an explosive design. It is equipped with the modified 7750 HUB1242 automatic movement, which perfectly replicates the original functions of instantaneous start and flyback chronograph, enhancing stability and achieving an ultra low repair rate with a secondary weight increase. The strap is made of natural rubber, providing exceptional waterproof capabilities and a soft, comfortable feel. The crystal is crafted from natural sapphire glass, making it scratch resistant and flawless. As a young brand, Hublot expresses a bold personality and unique design, revitalizing the essence of youth and freedom, inviting everyone to experience this youthful spirit together.