Contents: main body, box, instruction manual, warranty card is included in the instruction manual Water resistance: 20 ATM waterproof function Movement type: Quartz Band color: Black Material of the wind shield:Crystal Material of the band: resin Display type: Digital Case diameter and width (mm):43.2 millimeters Details: Since its launch in 1983, G-SHOCK has continued to evolve in its quest for unrelenting strength. G-SHOCK is proud to announce the release of a signature model for Ryo Ishikawa, a professional golfer affiliated with Casio who won the Men's Tour Championship at the age of 15 years and 8 months*, and is the youngest person ever to hold the prize money title in Japan. The base model is the popular GM-5600 with a metal bezel and a square design, which is finished in a chic silver metal and black color scheme. The band is printed with "WITHHEART AND SOUL", the English translation of Ishikawa's motto, and the ring is printed with 17 stars to represent his 17 wins on the tour. The back of the watch is also engraved with Ishikawa's autograph, and his trademark sun visor mark shines on the backlight, making this a special model. The design, expressed in hard silver and black with different textures, is a cool design that can be worn as a fashion item that gives a sense of Ishikawa's humility but hidden strength. Stopwatch (1/100 second (00'00"00 to 59'59"99)/1 second (1:00'00" to 23:59'59"), 24-hour counter, with split) ●Timer (set unit: 1 second, maximum Timer (set unit: 1 second, maximum: 24 hours, measured in 1-second increments, auto-repeat) ●Multi-alarm, time signal ●Full auto-calendar ●12/24-hour time system switching ●EL backlight (with afterglow function) ●Alarm flash function (alarm / time signal / timer linked emission) [Ryo Ishikawa, Casio Computer] In January 2008, while still in high school, Ryo Ishikawa turned professional at the age of 16. In January 2008, while still in high school, he declared his intention to turn professional at the age of 16, winning his first professional tournament at the Mynavi ABC Championship in November. In 2009, he played in three overseas majors, including the Masters, and won four tournaments in Japan, earning more than 180 million yen in prize money and becoming the youngest player ever to win the money title. He won the 2012 Sumitomo Mitsui VI SA Pacific Masters, and in 2013, he moved his focus to the U.S. Tour. She has won one tournament on the Japan Tour in 2014, and in 2015, she won the final round of the Japan Series JT Cup for her first major championship in Japan. In 2004, she was forced to take a long break of five months due to back pain, but she won the RIZAP KBC Augusta in her second tournament back. In recent years, he has been struggling with injuries, but in 2019, he won the Japan PGA Championship, a domestic major, for the first time in three years. He also won three more tournaments that year, including the Golf Japan Series JT Cup, and became the 14th player to surpass 1 billion yen in lifetime earnings.