Here, I would like to introduce Casio PRW-6600Y- 1A9PR's sports watch to you. Its advantages are mainly manifested in the following three aspects: First, compared with ordinary outdoor mountaineering watches, PRW-6600Y- 1A9PR is Casio PRO? The new TREK mountaineering watch adopts sapphire glass mirror. The main advantages of this kind of mirror are high strength and scratch resistance. Sapphire has a high hardness, and watches made of this material have higher impact resistance, sealing performance and strength than other materials, and wear resistance, which can keep the mirror crystal clear for a long time. Secondly, in addition, it is equipped with the third generation triple sensor, which has higher measurement accuracy. At present, it is 2990 yuan in official website, which belongs to the middle and high-grade level. It's definitely no problem to give it away.