Thank you very much for viewing! This is the 4th official collaboration model with the Surfrider Foundation, an environmental protection organization dedicated to protecting the coastal environment. The base model is the DW-9500 from the "X-tream" series, which supports active sports like surfing, and features a temperature measurement function. - Brand: CASIO G-SHOCK - Model: DW-9500 - Color: White - Features: Digital display, shock resistance - Strap Material: Nylon - Functions: Stopwatch, alarm, temperature measurement Operation...Good U2503250021 Thank you for your consideration!