The weight of Rolex Blackwater Ghost varies with different materials. At present, the common black water ghost materials on the market are black ceramics and stainless steel, in which the weight of black ceramics is generally around 145g, and the weight of stainless steel is around 155g. Black ceramic material is relatively light, and has the characteristics of wear resistance and scratch resistance, which makes the wearer more comfortable during diving. Stainless steel is more durable and suitable for long-term diving activities.