With a resilient titanium case and band, this is the men's watch that is updated six times a day by the nearest world atomic clock transmitter, while deriving its power from the sun. Ensuring precision timekeeping, it receives signals from atomic clocks located in the U.S., U.K., Germany, and Japan, and adjusts itself for daylight saving and when traveling between time zones (after setting your home city). Eliminating the need to set the time or replace batteries, a rechargeable battery stores energy collected by a solar cell in the watch's face. While a full charge will provide up to five months of use, normal exposure to light will power it indefinitely. Five individual electro-mechanic motors operate the second hand, chronograph (1/20th second accuracy), world time, 24-hour time, and its classic date display. It also has a tide indicator that depicts high and low tides in addition to 29 time zones (covering 27 cities) on its bezel. Water-resistant down to 328'. Scratch-resistant and glare-free sapphire crystal face. Watch case 1 3/4" L x 1 3/4" W x 1/2" H. (3 1/2 oz.)