Casio Pro Trek Tough Solar Environmentally Friendly Bio-Based Resin Digital Watch PRG-340-SC-2CR

Carefully crafted with Bio-Based materials to be more environmentally friendly, Casio "Tough Solar" movement - powered by light, you'll never need to change the battery!, 100M Water resistance rating provides peace of mind using your watch during light water activities, Additional features include Altimeter, Barometer, Digital Compass, Thermometer functions, Records "Trek Log" data, including records of high/low altitudes & relative readings