Casio AQ-S810W-1A2VEF Solar Power Analogue Watch Utilizing a unique Self-Charging solar power system, this sporty analog/digital combination model provides plenty of functionality. A host of features such as 48-city world time, 5 alarms, stopwatch and dual countdown timers make this a versatile timepiece for almost any sport outing. Matte black resin band, solar digital analog watch with black face. Features: Solar powered 100M water resistant World time (48 city) Dual countdown timers (for interval training) Matte black resin band