I feel that I am using this sports watch now. I have been wearing it for several years. You can use it. It's Rossini's sharp crown sports series, model YD5537. In addition to time display, this multifunctional one has five functions. They are110 seconds, 60 seconds, 60 minutes, date and, importantly, luminous display. Running at night is no problem at all! The watch mirror is sapphire glass, and the strap is 3 16 fine steel, which is waterproof 100m. I often take him swimming and even diving lightly. It's ok to wear it when running. Their current Tmall flagship store is doing very well. You can go and have a look. These days coincide with Rossini's 3 1 anniversary. Very good!