Casio Computer Co., Ltd. announced today the release of the latest addition to the PRO TREK line of outdoor watches. The new PRW-61MA is a collaboration model designed with the Swiss outdoor brand MAMMUT. This latest release, the PRW-61MA, brings PRO TREK and MAMMUT together for a design that is perfect for an urban outdoor lifestyle. PRW-61MA PRW-61MA and interchangeable band The watch comes with a cloth band and interchangeable soft urethane band that suit a variety of different occasions and clothing styles. The primary cloth band features the monochromatic MAMMUT Alpine all over print of s…